Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files. In Obsidian, making and following connections is frictionless, and with the connections in place, you can explore all of your knowledge in the interactive graph view. Obsidian supports CommonMark and GitHub Flavored Markdown (GFM), along with other useful notetaking features such as tags, LaTeX mathematical expressions, mermaid diagrams, footnotes, internal links and embedding Obsidian notes or external files. Obsidian also has a plugin system with 20+ supported plugins to expand its capabilities.The documentation can be accessed by opening the demo vault that is shipped in Obsidian.Obsidian will always remain free for personal use, no account or license is required for qualifying use cases described in the End User License Agreement. However, commercial users should purchase a license on Obsidian's website. Users also have the option to purchase a Catalyst license to get early access to insider builds and support the development. Additionally, Obsidian offers an optional paid hosting service for your notes. Details about this optional hosting service can be found on the Obsidian website.This distribution is currently in beta and not officially supported by the Obsidian teamThere is now experimental Wayland support that can be enabled with OBSIDIAN_USE_WAYLAND=1 in FlatsealGPU acceleration can be disabled if necessary by setting OBSIDIAN_DISABLE_GPU=1 and/or OBSIDIAN_DISABLE_GPU_SANDBOX=1 in Flatsealpdflatex support in pandoc currently requires installing the org.freedesktop.Sdk.Extension.texlive SDKNote: Regular users should disable "Automatic Updates" within Obsidian as public release updates are handled by Flatpak itself. Insiders should keep this enabled to receive insider builds, as those will not be made available on Flathub.This flatpak goes into great lengths to provide a nice experience for end users. In order for the Git plugin to work it requires permission to the ssh-auth socket (--socket=ssh-auth). It also exposes the home directory in the sandbox (required for Drag and Drop operations). If you don't use the Git plugin you can disable the ssh-auth socket permission, e.g. using Flatseal. You can also remove access to the home directory if you want and the flatpak will continue to work, albeit with reduced functionality. In case you do remove access to the homedir, note that in order for things to not break for the Git plugin, --persist=.ssh flag has been passed and a bind mount to ~/.var/app/md.obsidian.Obsidian/ is created by flatpak, allowing that location to be used for persistent data (but your home directory's .ssh remains unaccessible)

Obsidian

Experience the thrill of medieval castle building and destruction in our isometric, open source strategy game - a modern remake of Firefly Studios' classic Stronghold. Immerse yourself in a world of strategy and tactical decision making as you design and defend your own castles in medieval Europe.

Stone Kingdoms

Zandronum is a multiplayer oriented port, based off Skulltag, for Doom and Doom II by id Software. Zandronum brings classic Doom into the 21st century, maintaining the essence of what has made Doom great for so many years and, at the same time, adding new features to modernize it, creating a fresh, fun new experience. Here's why you should kill your time with Zandronum, versus vanilla Doom:Client/server architecture: play and switch between games with easeSupports up to 64 playersWide array of gameplay modesCompetitive: Team DM, Duel, CTF, Possession, LMS, Terminator, SkulltagCooperative: Survival, Invasion (or both!)Modifiers, like Instagib and Buckshot, can be used to spice up any gameModern and beautifulSupport for large number of ZDoom and GZDoom modsChoose between GZDoom's OpenGL renderer, or Doom's Software rendererUseful features like a console, Quake-style key bindings, freelooking, and jumpingSupport for many Doom engine based games including Heretic, Hexen, and StrifeSupports modern versions of Windows, Mac OS X, and LinuxIn some scenarios, commercial data files are required to run the supported games. In other cases, it's possibly to automatically use Freedoom as a drop-in replacement. This package comes bundled with Doomseeker for easy installation and server browsing.

Zandronum

Leading the way in newschool multiplayer Doom online

Listen to your favorite music without using a browser.

Monophony

GoldenDict is a feature-rich dictionary lookup program, supporting multiple dictionary formats (StarDict/Babylon/Lingvo/Dictd/AARD/MDict/SDict) and online dictionaries, featuring perfect article rendering with the complete markup, illustrations and other content retained, and allowing you to type in words without any accents or correct case.

GoldenDict

Pure instant messaging — simple, fast, secure, and synced across all your devices. One of the world's top 10 most downloaded apps with over 500 million active users.FAST: Telegram is the fastest messaging app on the market, connecting people via a unique, distributed network of data centers around the globe.SYNCED: You can access your messages from all your phones, tablets and computers at once. Telegram apps are standalone, so you don’t need to keep your phone connected. Start typing on one device and finish the message from another. Never lose your data again.UNLIMITED: You can send media and files, without any limits on their type and size. Your entire chat history will require no disk space on your device, and will be securely stored in the Telegram cloud for as long as you need it.SECURE: We made it our mission to provide the best security combined with ease of use. Everything on Telegram, including chats, groups, media, etc. is encrypted using a combination of 256-bit symmetric AES encryption, 2048-bit RSA encryption, and Diffie–Hellman secure key exchange.100% FREE &amp; OPEN: Telegram has a fully documented and free API for developers, open source apps and verifiable builds to prove the app you download is built from the exact same source code that is published.POWERFUL: You can create group chats with up to 200,000 members, share large videos, documents of any type (.DOCX, .MP3, .ZIP, etc.) up to 2 GB each, and even set up bots for specific tasks. Telegram is the perfect tool for hosting online communities and coordinating teamwork.RELIABLE: Built to deliver your messages using as little data as possible, Telegram is the most reliable messaging system ever made. It works even on the weakest mobile connections.FUN: Telegram has powerful photo and video editing tools, animated stickers and emoji, fully customizable themes to change the appearance of your app, and an open sticker/GIF platform to cater to all your expressive needs.SIMPLE: While providing an unprecedented array of features, we take great care to keep the interface clean. Telegram is so simple you already know how to use it.PRIVATE: We take your privacy seriously and will never give any third parties access to your data. You can delete any message you ever sent or received for both sides, at any time and without a trace. Telegram will never use your data to show you ads.We keep expanding the boundaries of what you can do with a messaging app. Don’t wait years for older messengers to catch up with Telegram — join the revolution today.

Telegram Desktop

Plex for Linux is your client for playback on the Linux desktop. It features the point and click interface you see in your browser but uses a more powerful playback engine as well as some other advanced features.

Plex

Flycast is a multi-platform Sega Dreamcast, Naomi and Atomiswave emulator derived from reicast.

Flycast

Sega Dreamcast, Naomi and Atomiswave emulator

SaveDesktop lets you save your current configuration (themes, icons, wallpapers, all desktop environment settings, extensions, etc.) with one click.Supported desktop environments: GNOME, Cosmic, Xfce, Budgie, Pantheon, MATE, KDE Plasma and Cinnamon

SaveDesktop

Save the current configuration of your desktop environment

A level editor for NSMB2. Uses Qt6 and is coded in C++CoinKiller requires a dump of NSMB2

CoinKiller

The Qt D-Bus Viewer is a tool that lets you introspect D-Bus objects and messages. You can choose between the system bus and the session bus.

Qt QDBusViewer

Qt Linguist allows you to translate Qt applications

Qt Linguist

Qt Designer lets you created and edit .ui files for your Qt Widgets Application

Qt Designer

2D and 3D views with many tools, 3D view also for non-uniform images, Volume Rendering, Multi-planar reconstruction (MPR), RTSTRUCT contours.DICOM Study multi-view with intersection lines.Consistently de-identify DICOM, maintain integrity.2D+t and 3D+t animations.DICOM metadata viewer.Most IODs are supported incl. enhanced, Structured Reports (SR), sequential and interleaved 4D Series, Grayscale Softcopy Presentation State (PR), Ultrasound with proper measurement in Calibrated Regions, etc.

Aliza MS

To use the Signal desktop app, Signal must first be installed on your phone.Millions of people use Signal every day for free and instantaneous communication anywhere in the world. Send and receive high-fidelity messages, participate in HD voice/video calls, and explore a growing set of new features that help you stay connected. Signal’s advanced privacy-preserving technology is always enabled, so you can focus on sharing the moments that matter with the people who matter to you.Signal is an independent 501c3 nonprofit. The complete source code for the Signal clients and the Signal server is available on GitHub.This flatpak is maintained by the Flathub community, and is not necessarily endorsed or officially maintained by the upstream developers.

Signal Desktop

SDRangel is an Open Source SDR and signal analyzer frontend to various hardware. It is able to receive and transmit various analog and digital modes, TX/RX from multiple SDRs simultaneously, do noise figure measurement, satellite and star tracking, rotator control, 2D and 3D mapping and much more.It has native support for Airspy, Airspy HF, Airspy Discovery, FUNcube, HackRF, KiwiSDR, LimeSDR, LimeSDR Mini, LimeRFE, Perseus, PlutoSDR, RTL-SDR, USRP B210, XTRX, and more devices via Soapy and audio interfaces.Please note that the SDRangel Flatpak requires udev rules for most SDR devices to be installed on the system to work properly. You will have to either install the tools for your SDR via regular package manager or manually download the udev rules from https://github.com/flathub/org.sdrangel.SDRangel/tree/master/udev-rules and copy them into system /etc/udev/rules.d/ before using SDRangel.

SDRangel

NOTE: This release is not verified by, affiliated with, or supported by Bisq Network.Buy and sell bitcoin for fiat (or other cryptocurrencies) privately and securely using Bisq's peer-to-peer network and open-source desktop software. No registration required.

Bisq

A decentralized bitcoin exchange network.

BleachBit quickly frees disk space and tirelessly guards your privacy. Free cache, delete cookies, clear Internet history, shred temporary files, delete logs, and discard junk you didn't know was there. It wipes clean a thousand applications including Firefox, Adobe Flash, Google Chrome, Opera, and more.Beyond simply deleting files, BleachBit includes advanced features such as shredding files to prevent recovery, wiping free disk space to hide traces of files deleted by other applications, and vacuuming Firefox to make it faster.

BleachBit

Cleans files to free disk space and to maintain privacy

NOTE: This release is not verified by, affiliated with, or supported by Standard Notes Ltd.Standard Notes is a simple and private notes app. It syncs your notes securely across all your devices, including your Android devices, Windows, iOS, Linux, and Web.Private means your notes are end-to-end encrypted, so only you can read your notes. Even we can't read the contents of your notes.Simple means it does one job and does it well. Standard Notes is a safe and lasting place for your life's work. Our focus is making it easy to write notes wherever you are and syncing them with encryption to all your devices.Our users love us for:Personal NotesTasks &amp; TodosPasswords &amp; KeysCode &amp; Technical ProceduresPrivate JournalMeeting NotesCross-platform ScratchpadBooks, Recipes, &amp; MoviesHealth &amp; Fitness LogStandard Notes comes free with:Seamless sync across all your devices, with easy to use applications on Android, Windows, Linux, iPhone, iPad, Mac, and web browsers.Offline access, so you can access your downloaded notes even without a connection.No limit on number of devices.No limit on number of notes.Passcode lock protection, along with fingerprint protection.A tagging system to organize your notes (like #work, #ideas, #passwords, #crypto).The ability to pin, lock, protect, and move notes to trash, which allows you to recover deleted notes until the trash is emptied.Standard Notes is completely open-source, which means when we say your notes are encrypted with AES-256 encryption, and that only you can read your notes, you don't have to take our word for it. Our code is open to the world to audit.We made Standard Notes simple because longevity is important to us. We want to make sure we're here, protecting your notes, for the next hundred years. You shouldn't have to find a new notes app every year.To sustain our development, we offer an optional paid program called Standard Notes Extended. Extended gives you access to powerful tools including:Productivity editors (like Markdown, Code, Spreadsheets)Beautiful themes (like Midnight, Focus, Solarized Dark)Powerful cloud tools including daily backups of your encrypted data delivered to your email inbox every day, or backed up to your cloud provider (like Dropbox and Google Drive).You can learn more about Extended at standardnotes.com/extended.

Standard Notes

A simple and private place for your notes, thoughts, and life's work

Cryptomator provides transparent, client-side encryption for your cloud. Protect your documents from unauthorized access. Cryptomator is free and open source software, so you can rest assured there are no backdoors.Cryptomator encrypts file contents and names using AES. Your passphrase is protected against bruteforcing attempts using scrypt. Directory structures get obfuscated. The only thing which cannot be encrypted without breaking your cloud synchronization is the modification date of your files.Cryptomator is a free and open source software licensed under the GPLv3. This allows anyone to check our code. It is impossible to introduce backdoors for third parties. Also we cannot hide vulnerabilities. And the best thing is: There is no need to trust us, as you can control us!Vendor lock-ins are impossible. Even if we decided to stop development: The source code is already cloned by hundreds of other developers. As you don't need an account, you will never stand in front of locked doors.

Cryptomator

Multi-platform client-side encryption tool optimized for cloud storages

Select an operating system and let Boxes download and install it for you in a virtual machine.Features:Download freely available operating systems.Automatically install CentOS Stream, Debian, Fedora, Microsoft Windows, OpenSUSE, Red Hat Enterprise Linux, and Ubuntu.Create virtual machines from operating system images with a couple of clicks.Limit the resources (memory and storage) your virtual machines consume from your system.Take snapshots of virtual machines to restore to previous states.Redirect USB devices from your physical machine into virtual machines.3D acceleration for some of the supported operating systems.Automatically resize virtual machines displays to the window size.Share clipboard between your system and virtual machines.Share files to virtual machines by dropping them from your file manager into the Boxes window.Setup Shared Folders between your system and virtual machines.

Boxes

Helvum is a graphical patchbay for PipeWire. It allows creating and removing connections between applications and/or devices to reroute flow of audio, video and MIDI data to where it is needed.

Helvum

NeoChat is a Matrix client. It allows you to send text messages, videos and audio files to your family, colleagues and friends using the Matrix protocol.Matrix is a decentralized communication protocol, putting the user back in control. Currently NeoChat implements large part of the protocol with the exception of encrypted chats and video chat.NeoChat works both on mobile and desktop while providing a consistent user experience.

NeoChat

A client for matrix, the decentralized communication protocol

A simple tool for cropping and downsizing images. Suitable for avatars or cropping photos for use as desktop wallpapers. Convert PNG to JPG. Export in one click to your Pictures folder.

Avvie

Flacon extracts individual tracks from one big audio file containing the entire album of music and saves them as separate audio files. To do this, it uses information from the appropriate CUE file. Besides, Flacon makes it possible to conveniently revise or specify tags both for all tracks at once or for each tag separately.Supported input formats: WAV, FLAC, APE, WavPack, True Audio (TTA)Supported output formats: FLAC, WAV, WavPack, AAC, OGG or MP3Support of profiles, you can have different encoding options for different cases, such as maximum quality for your computer, and CD quality for your phoneReplay Gain analysis (album-gain and track-gain modes)Multi-threaded conversion processAutomatic character set detection for CUE filesGeneration of the pertrack CUE file in the output dir

Flacon

Flacon extracts individual tracks from one big audio file containing the entire album of music and saves them as separate audio files

DDraceNetwork is an actively maintained version of DDRace, a Teeworlds modification with a unique cooperative gameplay. Help each other play through custom maps with up to 64 players, compete against the best in international tournaments, design your own maps, or run your own server.

DDNet

DDraceNetwork, a cooperative racing mod of Teeworlds

Notesnook is a free (as in speech) &amp; open source note taking app focused on user privacy &amp; ease of use. To ensure zero knowledge principles, Notesnook encrypts everything on your device using XChaCha20-Poly1305 &amp; Argon2.Notesnook is our proof that privacy does not (always) have to come at the cost of convenience. Our goal is to provide users peace of mind &amp; 100% confidence that their notes are safe and secure. Our decision to go fully open source is one of the most crucial steps towards that.Notesnook is a user focused note taking tool meant to offer a fully end-to-end encrypted note taking experience for everyone. This includes the majority of our less tech savy users who just want to take notes without all the hassle.In short, Notesnook aims to offer a complete replacement for other insecure note taking tools like Evernote &amp; Notion. Because let's be honest, these tools offer great productivity but at a great cost to your privacy.

Notesnook

A fully open source & end-to-end encrypted note taking alternative to Evernote

Wasabi is an open-source, non-custodial, privacy-focused Bitcoin wallet. It is a piece of software that runs on your computer and helps you to manage your bitcoins. Although Wasabi has some very advanced magic under the hood, it is rather easy to use. You can generate a new set of private keys, or import already existing ones. With Wasabi you can receive bitcoins into your full control, and you can send them to someone else without needing permission from any other person or entity. There is also a powerful CoinJoin feature to help obfuscate your transaction history. You can use Wasabi to manage your hardware wallet, and it even connects to your own full node. Of course, Wasabi is libre and open-source, which means you have full control over the software you manage your money with.

Wasabi Wallet

Open-source, non-custodial, privacy-focused Bitcoin wallet for Desktop, that implements trustless CoinJoin.

Contour is a modern and actually fast, modal, virtual terminal emulator, for everyday use. It is aiming for power users with a modern feature mindset.Available on all 4 major platforms, Linux, OS/X, FreeBSD, Windows.GPU-accelerated rendering.Font ligatures support (such as in Fira Code).Unicode: Emoji support (-: 🌈 💝 😛 👪 - including ZWJ, VS15, VS16 emoji :-)Unicode: Grapheme cluster supportBold and italic fontsHigh-DPI support.Vertical Line Markers (quickly jump to markers in your history!)Vi-like input modes for improved selection and copy'n'paste experience and Vi-like scrolloff feature.Blurred behind transparent background when using Windows 10 or KDE window manager on Linux.Blurrable Background image support.Runtime configuration reload256-color and Truecolor supportKey binding customizationColor SchemesProfiles (grouped customization of: color scheme, login shell, and related behaviours)Synchronized renderingText reflow (configurable via SM ? 2028 / RM ? 2028)Clickable hyperlinks via OSC 8Clipboard setting via OSC 52Sixel inline imagesTerminal page buffer capture VT extensionBuiltin Fira Code inspired progress bar support.Read-only mode, protecting against accidental user-input to the running application, such as Ctrl+C.VT320 Host-programmable and Indicator status line support.and much more ...

Contour Terminal Emulator

Contour is a modern and actually fast, modal, virtual terminal emulator, for everyday use

Nextcloud Password Client is a Flutter based application to manage passwords from the corresponding Nextcloud Passwords app. The focus  is set to desktop clients, especially linux.FeaturesSaving passwords / tags etc. on local hard drive (encrypted)Save the app with a client passwordWork offline after first retrieval of objectsLogging in with or without master passwordNavigate trough objects like in web viewSee all details of password like in web view

Nextcloud Password client

Manage your Nextcloud Passwords on your desktop

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