A didactic robotic SLAM simulator.

BlockOut II is a game where the player moves and rotate 3D polycubes that are constantly falling with the objective of clearing layers of blocks. It is a free adaptation of the original BlockOut game released in 1989.

Critical Mass (also known as Critter) is a top-down shoot-em-up game where your home world has been infested by an aggressive army of space critters and you are required to pilot a small spacecraft to destroy them all.

You pilot your ship through the dreaded "Maelstrom" asteroid belt -- suddenly your best friend thrusts towards you and fires, directly at your cockpit. You raise your shields just in time, and the battle is joined.

The deadliest stretch of space known to mankind has just gotten deadlier. Everywhere massive asteroids jostle for a chance to crush your ship, and deadly shinobi fighter patrols pursue you across the asteroid belt. But the deadliest of them all is your sister ship, assigned to you on patrol. The pilot, trained by your own Navy, battle hardened by months in the Maelstrom, is equipped with a twin of your own ship and intimate knowledge of your tactics.

The lovely Stratocaster R&R facility never sounded so good, but as you fire full thrusters to dodge the latest barrage you begin to think you'll never get home...

Cross-platform Twitch client. Features:

• Channel browsing
• Integrated player
• Login via Twitch account
• Chat
• Streamable videos
• Desktop notifications

PlayOnLinux will allow you to run your favorite Windows games and applications on Linux through Wine easily.

New users can often find Wine to be intimidating and difficult to use. PlayOnLinux simplifies much of this and makes installing and using Windows programs easier.

PlayOnLinux has the database of Windows applications from which the user can install desired application with a few clicks. It will automatically setup your Wine prefix and download any required Windows libraries.

PrusaSlicer takes 3D models (STL, OBJ, AMF) and converts them into G-code instructions for FFF printers or PNG layers for mSLA 3D printers. It's compatible with any modern printer based on the RepRap toolchain, including all those based on the Marlin, Prusa, Sprinter and Repetier firmware. It also works with Mach3, LinuxCNC and Machinekit controllers.

PrusaSlicer is based on Slic3r by Alessandro Ranelucci and the RepRap community.

You drive a toy wood engine in many levels and you must collect all the coaches to win. Full-featured: Colorful animated wood engine, 50 levels, 3 beautiful music tracks and many sound effects.

Ri-li is translated in 19 languages: Arabic, Breton, Chinese, Dutch, English, Esperanto, French, German, Hungarian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Slovak, Spanish, Swedish and Turkish.

Amsynth is an analog modelling (a.k.a virtual analog) software synthesizer. It mimics the operation of early analog subtractive synthesizers with classic oscillator waveforms, envelopes, filter, modulation and effects. The aim is to make it easy to create and modify sounds.

Features:

• Dual oscillators (sine / saw / square / noise) with hard sync
• 12/24 dB/oct resonant filter (low-pass / high-pass / band-pass / notch)
• Mono / poly / legato keyboard modes
• Dual ADSR envelope generators (filter & amplitude)
• LFO which can modulate the oscillators, filter, and amplitude
• Distortion and reverb
• Hundreds of presets

There are currently several different ways to run amsynth:

• Stand-alone application using JACK, ALSA or OSS
• DSSI plug-in
• LV2 plug-in
• VST plug-in

Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.

Anyone who needs to remember things in their daily life can benefit from Anki. Since it is content-agnostic and supports images, audio, videos and scientific markup (via LaTeX), the possibilities are endless.

For example:

• Learning a language (vocabulary, grammar, phrases, ...)
• Studying for medical and law exams
• Memorizing people's names and faces
• Brushing up on geography
• Mastering long poems
• Even practicing guitar chords!

A translation app for GNOME.

Features:

• Translation based on Google Translate
• Translation based on the LibreTranslate API, allowing you to use any public instance
• Translation based on Lingva Translate API
• Text to speech
• Translation history
• Automatic language detection
• Clipboard buttons

Ardour is a multi-channel digital audio workstation, allowing you to record, edit, mix and master audio and MIDI projects.

It is targeted at audio engineers, musicians, soundtrack editors and composers.

Advanced Strategic Command is a free, turn based strategy game. It is designed in the tradition of the Battle Isle series from Bluebyte and is currently available for Windows and Linux.

ASC can be played both against the AI and against other human players, using hotseat or PlayByMail. It is also used to run the multiplayer universe Project Battle Planets.

Atomorun is a OpenGL Jump and Run game where you have to flee an exploding nuclear bomb.

Atomorun X-Mas Edition comes with a very beatiful christmas-story, especially families will enjoy it:

Atomio was just walking around somewhere in the alpine region, when santa crashed with his nuclear driven sleigh. Now Atomio has to run, because he doesn't want to be contaminated.

Atril is a simple multi-page document viewer. It can display and print PostScript (PS), Encapsulated PostScript (EPS), DJVU, DVI, XPS and Portable Document Format (PDF) files, as well as comic book archive files. When supported by the document, it also allows searching for text, copying text to the clipboard, hypertext navigation and table-of-contents bookmarks.

Atril is a fork of Evince and part of the MATE Desktop Environment. If you would like to know more about MATE and Atril, please visit the project's home page.

Star Traders is a simple game of interstellar trading, where the objective is to create companies, buy and sell shares, borrow and repay money, in order to become the wealthiest player (the winner).

Game inspired by one of the great classics. The purpose of the game is to remove all the bricks on the screen, by hitting them with a ball. You can control the ball by bouncing it back at the bricks with a paddle which you control with your mouse.

The game features:

• A built in level editor
• 20 powerups
• Particle effects
• Alpha effects
• Rotating and zooming

Berusky 2 is a 3D puzzle game where you control up to 5 bugs that have to work together to solve puzzles by moving boxes, using keys and blowing up explosives.

Blivet-gui is a graphical tool that provides an easy way to create, delete or edit partitions, LVM, RAID or Btrfs volumes.

Available advanced options includes setting up encrypted devices (LUKS), LVM or Btrfs volumes spanning more drives and creating kickstart files for automated installations.

Bluefish is a powerful editor targeted towards programmers and web developers, with many options to write websites, scripts and programming code. Bluefish supports many programming and markup languages and has many features, but is still a very fast and lightweight application.

A selection of the features:

• Well done syntax highlighting which for example supports languages inside languages (e.g. Javascript inside HTML inside PHP)
• All kind of powerful editor features like auto indenting and auto completion for many functions and libraries in many programming languages
• Project support
• Support for remote files over ftp, sftp, webdav, etc
• Powerful search and replace engine
• Customizable integration of external programs such as lint, make, etc
• Snippets plugin to automate often used code
• Code-aware in-line spell checking
• Zencoding or Emmet support
• Bookmarks panel

If you are an occasional coder who is in need for a simple to learn editor, or a heavy coder who dislikes heavy IDE's like eclipse or netbeans, Bluefish is your editor of choice!

Bolzplatz 2006 / Slam Soccer 2006 is a funny football game in 3D-comic-style. The Bolzplatz 2006 game-engine is Open Source. The Bolzplatz 2006 data-files however are licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License and are not included in Fedora because of the no commercial use clause.

This package installs the engine and an applications menu entry for playing Bolzplatz 2006. The first time you click this menu entry, it will offer to download and install the datafiles for you.

Features:

• Funny 3d-comic-style
• English, French and German translation
• Enthralling stadium atmosphere
• Keyboard and gamepad control
• 2-player mode
• Career and world cup

Bos Wars is a futuristic real-time strategy game (RTS). In a RTS game, the player has to combat his enemies while developing his war economy. Everything runs in real-time, as opposed to turn-based games where the player always has to wait for his turn. The trick is to balance the effort put into building his economy and building an army to defend and attack the enemies.

Bos Wars has a dynamic rate based economy. Energy is produced by power plants and magma gets pumped from hot spots. Buildings and mobile units are also built at a continuous rate. Control of larger parts of the map creates the potential to increase your economy throughput. Holding key points like roads and passages allow for different strategies.

It is possible to play against human opponents over LAN, internet, or against the computer. Bos Wars aims to create a completly original and fun open source RTS game.

Bubblemail is a D-Bus service providing a list of the new and unread mail from local mailboxes, pop, imap, and gnome online accounts. It includes a libnotify frontend to create notifications and can be used by other frontends as well.

butt (broadcast using this tool) is an easy to use, multi OS streaming tool. It supports ShoutCast and IceCast and runs on Linux, MacOS and Windows. The main purpose of butt is to stream live audio data from your computers Mic or Line input to an Shoutcast or Icecast server. Recording is also possible. It is NOT intended to be a server by itself or automatically stream a set of audio files.

Chocolate Doom is an original source port of the popular DOOM game for the PC.

It accurately reproduces the playing experience of the original DOOM game and is compatible with the numerous mods and levels designed for the original.

Chocolate Heretic is a conservative, historically-accurate Heretic source port, which is compatible with mods and levels that were made before the Heretic source code was released. Unlike other source ports, the goal is to preserve the original look, feel, limitations, and bugs of the original DOS executable.

Full support for single- and multi-player games is provided. Unlike the original executable, network play is implemented on the IP network stack, allowing it to function on modern LANs and the Internet.

Chocolate Hexen is a conservative, historically-accurate Hexen source port, which is compatible with mods and levels that were made before the Hexen source code was released. Unlike other source ports, the goal is to preserve the original look, feel, limitations, and bugs of the original DOS executable.

Full support for single- and multi-player games is provided. Unlike the original executable, network play is implemented on the IP network stack, allowing it to function on modern LANs and the Internet.

Chocolate Strife is a conservative, historically-accurate recreation of the Strife engine. It is completely compatible with the original game and mods created with the original engine in mind. Made with a great reverse engineering effort, it has the goal of preserving the original look, feel, limitations, and bugs of the original DOS executable.

Full support for single- and multi-player games is provided. Unlike the original executable, network play is implemented on the IP network stack, allowing it to function on modern LANs and the Internet.

ChordPro will read a text file containing the lyrics of one or many songs plus chord information. ChordPro will then generate a photo-ready, professional looking, impress-your-friends sheet-music suitable for printing on your nearest printer.

ChordPro is a rewrite of the Chordii program.

For more information about ChordPro, see https://www.chordpro.org.

Chromium is an open-source browser project that aims to build a safer, faster, and more stable way to experience the web.

We invite you to join our effort to build a powerful platform for developing a new generation of web applications.

Chromium supports Vorbis, Theora, WebM and HTML5 audio and video standards, but does not include the non-free AAC, H.264, MP3 or Adobe Flash code that is found in Chrome.

You are captain of the cargo ship Chromium B.S.U., responsible for delivering supplies to our troops on the front line. Your ship has a small fleet of robotic fighters which you control from the relative safety of the Chromium vessel. This is an OpenGL-based shoot 'em up game with fine graphics.

Your mission:

• Do not let ANY enemy ships get past your fighters! Each enemy ship that makes it past the bottom of the screen will attack the Chromium, and you lose a fighter.
• Use your fighters as weapons! Crash into enemies to destroy them before they can get past you.
• Strategic suicide is a powerful tactic! When the Chromium launches a new fighter, it releases a high energy burst which destroys all enemies in range.
• Self-destruct to preserve your ammunition! A double-right-click will cause your current fighter to self-destruct. Before the ship blows up, it ejects its ammunition so that the next fighter can pick it up.

ckb-next is an open-source driver for Corsair keyboards and mice. It aims to bring the features of their proprietary CUE software to the Linux and Mac operating systems. This project is currently a work in progress, but it already supports much of the same functionality, including full RGB animations.

ClanBomber is a free multiplayer game, where the "purpose" is to Blast the other players of the gamefield by laying bombs close to them. While at the same time you must avoid being blown up yourself.

It is fully playable and features Computer controlled bombers, however, it is recommended to play ClanBomber with friends (3-8 players are really fun).

krop is a simple graphical tool to crop the pages of PDF files.

It is written in Python and relies on PyQT, python-poppler-qt5 and PyPDF2 for its functionality.

A unique feature of krop is its ability to automatically split pages into subpages to fit the limited screen size of devices such as eReaders. This is particularly useful, if your eReader does not support convenient scrolling.

Vorta is a backup client for macOS and Linux desktops. It integrates the mighty BorgBackup with your desktop environment to protect your data from disk failure, ransomware and theft.

Why is this great?

• Encrypted, deduplicated and compressed backups using Borg as backend.
• No vendor lock-in – back up to local drives, your own server or BorgBase, a hosting service for Borg backups.
• Open source – free to use, modify, improve and audit.
• Flexible profiles to group source folders, backup destinations and schedules.
• One place to view all point-in-time archives and restore individual files.

Chatterino is a chat client for Twitch.tv.

CorsixTH aims to reimplement the game engine of Theme Hospital, and be able to load the original game data files. This means that you will need a purchased copy of Theme Hospital, or a copy of the demo, in order to use CorsixTH. After most of the original engine has been reimplemented in open source code, the project will serve as a base from which extensions and improvements to the original game can be made.

Tilix is a tiling terminal emulator.

It lets you:

• Layout terminals in any fashion by splitting them horizontally or vertically
• Terminals can be re-arranged using drag and drop both within and between windows
• Terminals can be detached into a new window via drag and drop
• Input can be synchronized between terminals so commands typed in one terminal are replicated to the others
• The grouping of terminals can be saved and loaded from disk
• Terminals support custom titles
• Color schemes are stored in files and custom color schemes can be created by simply creating a new file
• Transparent background
• Supports notifications when processes are completed out of view

The application was written using GTK 3 and an effort was made to conform to GNOME Human Interface Guidelines (HIG). As a result, it does use client-side-decorations, though it can be disabled if necessary.

Tilix has been tested with GNOME and with Unity.

Giada is an open source, minimalistic and hardcore music production tool. Designed for DJs, live performers and electronic musicians.

Wineglass is a small application that allows the user to manage their wineprefixes easily and install windows programs without the need of the terminal. It can:

• Easily create and remove wineprefixes
• Install supported windows apps on their corresponding wineprefix
• Make installed apps available normally through the applications menu.
• Provide an easy way to add windows libraries to wineprefixes through "winetricks".
• Configure wine
• run winprefix-specific system apps

This app is useful for running windows apps and games easily without hustle.

🚀️ Planner 3 is here...

• 🚀️ Complete redesign of the UI.
• 🤚️ Drag and Order arrived: Sort your tasks wherever you want.
• 💯️ Progress indicator for each project.
• 💪️ Be more productive and organize your tasks by 'Sections'.
• 💎️ Magic Button: Drag and Drop and create your tasks wherever you want.
• 🌙️ Better integration with the dark theme.
• 🎉️ and much more.

☁️ Support for Todoist:

• Synchronize your Projects, Task and Sections thanks to Todoist.
• Support for Todoist offline: Work without an internet connection and when everything is reconnected it will be synchronized.

* Planner not created by, affiliated with, or supported by Doist

☁️ Support for CalDAV:

• Synchronize your Tasklist.

💎️ Other features:

• 🔍️ Quick Find
• 🌙️ Night mode

Easily connect to your local or remote database

Store your Database Connections in the library, connect over SSH tunnel, type and execute SQL commands directly in the app, and do everything you need to do without the necessity of opening the terminal.

Supported Databases:

• SQLite
• MySQL
• MariaDB
• PostgreSQL

Features Include:

• Test Connections before saving them
• View Table structure, content, and relations
• Write multiple custom SQL Queries
• Switch between light and dark mode
• Handy keyboard shortcuts to quit (ctrl+q), create new connection (ctrl+shift+n), open a new window (ctrl+n)

Connect to a remote server with various Protocols (FTP, SFT, etc.), and quickly transfer files and folders with the handy double paned interface. Taxi handles bookmarks and remembers your login credentials too!

Figure out the word before your guesses run out!

• Three difficulty levels
• Almost 5k possible answers
• Need a break? Close the game and automatically pick back up where you left off

Read the books you love without having to worry about the different format complexities like EPUB, PDF, MOBI, CBR, etc.

Manage your library by tagging and updating metadata on books, to quickly find books using metadata searching and tag based filtering.

This version supports EPUB, MOBI, PRC, PDF, FB2 and comics (CBR and CBZ) formats with support for more formats to follow soon.

This program is a structured notetaking application based on GTK+ 3. Write your notes in instantly-formatted Markdown, organise them in a tree of folders that can be instantly navigated from within the program, and add hand-drawn notes by mouse, touchscreen or digitiser.

1. Why?

I figured it would be nice to have a free-software, platform-independent OneNote. While there is a remarkable number of free (speech or beer) notetaking applications out there, to my best knowledge, none of them simultaneously check the following boxes:

• note organisation
• text as a first-class object
• formatting
• simple, standard on-disk format
• tablet input

2. Usage notes

Note management

• To create a new note, doubleclick a "+" node in the tree view and enter a name.
• To create a new folder, doubleclick a "+" node in the tree view and enter a name ending in "/", e.g. new "folder/".
• Notes will be sorted alphabetically.
• You can move notes and whole folders between folders by dragging and dropping.
• Files are saved automatically when the window is closed, when a different file is opened, and after a timeout when no user action is performed.

Markdown

• Some markdown features are unsupported as a stylistic choice or because of parser limitations. If you are feeling adventurous, you can adjust the markdown parser by editing the GtkSourceView language definition in "sourceview/markdown.lang".
• Add LaTeX math using single "$" signs, e.g. "$\int x dx$".
• Some markdown will be hidden ("rendered") unless your cursor is next to it.

Note management

• Drawings can currently only be deleted whole. (This will be fixed eventually.)
• To edit the default colour palette, right-click any of the colour buttons on the right-hand toolbar.
• Due to present limitations, drawing clears the undo stack.
• When copypasting text into other applications, drawings will be automatically converted into data URL PNGs.

Note management

• The program loads a custom Gtk+ stylesheet found in "data/stylesheet.css". Clear it if parts of the UI look wonky.
• If something unexpected happens, it is often useful to run the program from a terminal and look at stdout.

Find a variety of the most beautiful wallpapers from Unsplash.com the world’s most generous community of photographers.

Fondo allows you to see thousands of beautiful photographs from the most recent to the one you are to looking for. Give a single click on a picture, wait until the download is complete and enjoy your new wallpaper!

Have a minimalist, simple and elegant interface, additionally, you can change from light mode to dark mode as you prefer.

Main features:

• 🌠️ To infinity and beyond!: Use the infinite scroll to load more photos.
• 🔍️ Find out what you like: Search by categories or type in the search bar.
• 🕒️ Keep your favorite photos with you: Every new wallpaper is saved in the history.
• 📬️ Share with your friends: Select a variety of options for sharing an Unsplash link to the photo.
• 🔄️ Filter by orientation: Portrait, Landscape or Any.
• 🖼️ Create an amazing slideshow on your desktop by selecting your favorites photos.
• 🔽️ Download any photo you like.

Analyze any display. Input a few simple details and figure out the aspect ratio, DPI, and other details of a particular display. Great for deciding which laptop or external monitor to purchase, and if it would be considered HiDPI.

Handy features:

• Find out if a display is a good choice based on its size and resolution
• Get advice about different densities
• Learn the logical resolution
• Differentiate between laptops and desktop displays
• Stupid simple: all in a cute li'l window

Based my expertise and experience shipping HiDPI hardware and software at System76 and elementary.

Tells you if a display’s density is:

• Very Low DPI,
• Fairly Low DPI,
• Ideal for LoDPI,
• Potentially Problematic,
• Ideal for HiDPI,
• Fairly High for HiDPI, or
• Too High DPI

Special thanks:

• Micah Ilbery for the shiny icons
• Daniel Foré for his apps to use as code examples

Browse the Internet in private without leaving a trace of history on your computer. Ephemeral is a stripped down private browser that's perfect for avoiding persistent cookies or web trackers. Close the window and all traces of your browsing are removed from your device.

Handy features:

• Easily open pages in any other installed browser
• Search right from the URL bar
• Pick between privacy-respecting search engines from the menu
• Quickly disable or re-enable JavaScript from the menu
• Choose to automatically open certain sites in another browser from the "Open page in…" menu

Useful keyboard shortcuts and gestures:

• Navigate back or forward with a two-finger swipe on your trackpad
• Open page in another browser with Ctrl+O
• Add a website to the URL suggestions with the ⭐️ icon or Ctrl+D
• Find text on the page with Ctrl+F
• Zoom in or out with Ctrl+Plus and Ctrl+Minus
• Open a new window with Ctrl+N
• Hit Ctrl+W to close the current window or Ctrl+Q to quit all windows

Ephemeral protects you in five key ways:

1️⃣ Always incognito. From the second you open an Ephemeral window until you close it (or hit the Erase button), Ephemeral is in private browsing mode. That means history, cookies, local storage, passwords, etc. are all blown away as soon as you leave.

2️⃣ Sandboxed. Each window uses a separate instance of the browser engine, domains inside each window are rendered using different processes, and the engine’s processes are sandboxed from one another to keep you safe. Sign into a service in one window, and sites in other windows will have no idea.

3️⃣ No third-party cookies. Ephemeral blocks cookies from third-party sources, which cuts down on advertising cookies and other unwanted forms of cross-site tracking.

4️⃣ No telemetry. Ephemeral does not touch the network until you explicitly load a web page or perform a search. Even then, no usage data is ever collected—I have no idea what you do with Ephemeral, and I don't want to know!

5️⃣️ Ephemeral uses DuckDuckGo—the search engine that doesn’t track you—by default to avoid as much Google tracking as possible. You can also choose StartPage.com from the menu if that’s your preference, or even set your own entirely custom search engine.

Make privacy a habit by opening links in Ephemeral by default, knowing you can always jump back into a traditional browser like Epiphany, Firefox, Chrome, Opera, Brave—or any other installed browser—with one click. Perfect in case you want to use saved passwords or other extensions.

Remember, Ephemeral and any browser's incognito or private mode can only do so much: they mitigate some tracking and don't store data on your device, but they won't stop your ISP, government, or determined websites from tracking you.

For the best protection, always use a VPN.

A task manager to help you keep track of the tasks that matter most.

Sometimes, you just need a task list to keep you motivated. Agenda provides a way to write down your tasks and tick them off as you complete them. The list is saved automatically, so you can close the list to get it out of the way without losing your place.

Key Features:

• Saves your task list automatically
• See your completed tasks until you choose to delete them
• Autocompletion for previously added tasks
• Undo/Redo with Ctrl-Z and Ctrl-Y
• Quit with the Esc key

Calculate and visualize color contrast. Harvey checks a given set of colors for WCAG contrast compliance.

• Pick colors from your display
• See explanations for different grades on hover
• Quit with the handy shortcut Ctrl + Q
• Join the contrast rebellion

ClamTk is intended to be an easy to use, light-weight, on-demand scanner for Linux systems.

Edit application entries shown in application menu and their properties.

Features include:

• Hide and show applications from the application menu
• Create new application entries
• Change application's display name, icon and more

Wike is a Wikipedia reader for the GNOME Desktop. Provides access to all the content of this online encyclopedia in a native application, with a simpler and distraction-free view of articles.

Features:

• Open multiple articles in tabs
• Multiple languages
• Search suggestions
• List of recent articles
• Simple bookmarks management
• Text search in articles
• Article table of contents
• View article in other languages
• GNOME Shell search integration
• Light, dark and sepia themes

JDim (JD improved) is a browser for Japanese textboard "2channel". The software has been forked from JD released under the terms of GPL-2.0, having look-and-feel and environment settings compatible.

Various features which are better viewing 2ch: Fetching updated posts, Hide NG word posts, Message posting, ASCII art input, Play-by-play mode, Mouse gestures, Display linked images, Bookmark and History, Filters for URL, Thread title search, Keyword search in thread, External boards support, Highly customizations and more...

PDF Arranger is a small application, which helps the user to merge or split pdf documents and rotate, crop and rearrange their pages using an interactive and intuitive graphical interface.

It is a frontend for pikepdf.

Het is een frontend voor pikepdf.

Foliate is a simple and modern GTK eBook viewer.

Features include:

• Two-page view and scrolled view
• Customize font and line-spacing
• Light, sepia, dark, and invert mode
• Reading progress slider with chapter marks
• Bookmarks and annotations
• Find in book
• Quick dictionary lookup

Track the virtual currencies in real world currency value with this handy applet

• Choose which currency and virtual currency to use for tracking
• Quit anytime with the shortcut Ctrl + Q
• Move the applet by dragging it from anywhere in the window
• Stays out of your way in the desktop

Dynamic Wallpaper Editor is a simple utility to create or edit dynamic wallpapers for the GNOME desktop.

The duration of each picture and each transition can be set separately or globally. The total duration can be 24 hours to do a wallpaper fitting the daylight.

This basic image editor can resize, crop, or rotate an image, apply simple filters, insert or censor text, and manipulate a selected portion of the picture (cut/copy/paste/drag/…)

And of course, you can draw! Using tools such as the pencil, the straight line, the curve tool, many shapes, several brushes, and their various colors and options.

Supported file types include PNG, JPEG and BMP.

Persepolis is easy to use graphical download manager that speed up your downloads!

Persepolis features:

Use the power of mind-mapping to make your ideas come to life.

• Quickly create visual mind-maps using the keyboard and automatic layout.
• Choose from many tree layout choices.
• Support for Markdown formatting.
• Support for insertion of Unicode characters.
• Add notes, tasks and images to your nodes.
• Add node-to-node connections with optional text and notes.
• Stylize nodes, links and connections to add more meaning and improve readability.
• Add stickers and node groups to call out and visibly organize information.
• Quick search of node and connection titles and notes, including filtering options.
• Zoom in or enable focus mode to focus on certain ideas or zoom out to see the bigger picture.
• Enter focus mode to better view and understand portions of the map.
• Unlimited undo/redo of any change.
• Automatically saves in the background.
• Colorized node branches.
• Open multiple mindmaps with the use of tabs.
• Built-in and customizable theming.
• Gorgeous animations.
• Import from OPML, FreeMind, Freeplane, PlainText (formatted), Outliner, PlantUML, Portable Minder, filesystem, and XMind formats.
• Export to CSV, FreeMind, Freeplane, JPEG, BMP, SVG, Markdown, Mermaid, OPML, Org-Mode, Outliner, PDF, PNG, PlainText, PlantUML, Portable Minder, filesystem, XMind and yEd formats.
• Printer support.

Clapper is a GNOME media player built using GJS with GTK4 toolkit. The media player is using GStreamer as a media backend and renders everything via OpenGL. Player works natively on both Xorg and Wayland. It also supports hardware acceleration through VA-API on AMD/Intel GPUs, NVDEC on Nvidia and V4L2 on mobile devices.

The media player has an adaptive GUI. When viewing videos in "Windowed Mode", Clapper will use mostly unmodified GTK widgets to match your OS look nicely. When player enters "Fullscreen Mode" all GUI elements will become darker, bigger and semi-transparent for your viewing comfort. It also has a "Floating Mode" which displays only video on top of all other windows for a PiP-like viewing experience. Mobile friendly transitions are also supported.

Organize your desktop with panels that hold your things.

• Access files, folders and apps from your desktop
• Drop files, folders, links and .desktop launchers inside panels
• Resize, position and color panels
• Display photos and keep notes on your desktop
• Reveal the desktop with ⌘-D

Open it like any other app after installing. Desktop Folder will launch automatically when you next log in.

vokoscreenNG is a powerful screencast creator in 41 languages to record the screen, an area or a window (Linux only). Recording of audio from multiple sources is supported. With the built-in camera support, you can make your video more personal. Other tools such as systray, magnifying glass, countdown, timer, Showclick and Halo support will help you do a good job.

This program can save files in some formats and use some codecs for video and audio:

• Video: H.264(x264, openh264), VP8
• Audio: vorbis, flac, opus and mp3.
• File: mkv, webm, avi, mp4 and mov.

vokoscreenNG is a modern full replacement for vokoscreen, both written by Volker Kohaupt. The main difference is that vokoscreen uses ffmpeg as base, while vokoscreenNG has been rewritten from scratch and is based in GStreamer.

EasyEffects is an advanced audio manipulation tool. It includes an equalizer, limiter, compressor and a reverberation tool, just to mention a few. To complement this there is also a built in spectrum analyzer.

EasyEffects is the successor to PulseEffects. EasyEffects only supports PipeWire's audio server. PulseAudio users should instead use PulseEffects.

Because EasyEffects uses the default PipeWire sound server it will work with most, if not all, applications you use. All supported applications are presented in the main window, where each can be enabled individually.

Besides manipulating sound output, EasyEffects is able to apply effects to an input device, such as a microphone. This is, for example, useful in audio recording, but it also works well during voice conversations.

When EasyEffects is launched it will conveniently remember the configuration used in the last session. It is also possible to save all the current settings as profiles.

PulseEffects is an advanced audio manipulation tools. It includes an equalizer, limiter, compressor and a reverberation tool, just to mention a few. To complement this there is also a built in spectrum analyzer.

Because PulseEffects uses the default PulseAudio sound server it will work with most, if not all, applications you use. All supported applications are presented in the main window, where each can be enabled individually.

Besides manipulating sound output, PulseEffects is able to apply effects to an input device, such as a microphone. This is, for example, useful in audio recording, but it also works well during voice conversations.

When PulseEffects is launched it will conveniently remember the configuration used in the last session. It is also possible to save all the current settings as profiles.

Xournal++ is a hand note taking software written in C++ with the target of flexibility, functionality and speed. Stroke recognizer and other parts are based on Xournal Code, which you can find at sourceforge. It supports Linux (e.g. Ubuntu, Debian, Arch, SUSE), macOS and Windows 10. Supports pen input from devices such as Wacom Tablets.

Xournal++ features:

• Supports pressure senstive styluses and digital pen tables (e.g. Wacom, Huion, XP Pen, etc. tablets)
• Paper backgrounds for notetaking, scratch paper, or whiteboarding
• Annotate on top of PDFs
• Export to a variety of formats including SVG, PNG and PDF, both from the GUI and command line
• Different drawing tools (e.g.pen, highlighter) and stroke styles (e.g. solid, dotted)
• Shape drawing (line, arrow, circle, rectangle, spline)
• Fill shape functionality
• Shape resizing and rotation
• Rotation and grid snapping for precise alignment of objects
• Input stabilization for smoother writing/drawing
• Text tool for adding text in different fonts, colors and sizes
• Enhanced support for image insertion
• Eraser with multiple configurations
• LaTeX support (requires a working LaTeX installation) with customizeable template
• Sidebar with Page Previews with advanced page sorting, PDF Bookmarks and Layers (can be individually hidden/edited)
• Allows mapping different tools/colors etc. to stylus/mouse buttons
• Customizeable toolbar with multiple configurations, e.g. to optimize toolbar for portrait/landscape
• Page Template definitions
• Bug reporting, autosave, and auto backup tools
• Audio recording and playback alongside with handwritten notes
• Multi language support (over 20 languages supported)
• Plugins using Lua scripting