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!
    

Bluefish

Text editor with many web and software development extras

The Eclipse IDE delivers what you need to rapidly innnovate.Polyglot language support: First class support for Java, JavaScript/TypeScript, C/C++, PHP, Rust, and othersCommunity powered: More and more the Eclipse IDE is being powered by individual contributors all around the worldImproved Java development tooling: Improved code templates and added various quick fixesBetter UI: Streamlined the UI through inline rename, a brand new Quick Search dialog and a better dark themeProven extensibility: A huge variety of platform plug-insFree and open source: Free and open source released under the terms of the Eclipse Public License 2.0

Eclipse IDE for Web and JavaScript Developers

The essential tools for any JavaScript developer, including JavaScript, TypeScript, HTML, CSS, XML, Yaml, Markdown languages support

Pulsar aims to not only reach feature parity with the original Atom, but to bring Pulsar into the 21st century by updating the underlying architecture, and supporting modern features.
    

Pulsar


      GHex is a hex editor for the GNOME desktop.
    
      
      GHex can load raw data from binary files and display them for editing in the
      traditional hex editor view. The display is split in two columns, with
      hexadecimal values in one column and the ASCII representation in the other.
      GHex is a useful tool for working with raw data.
    
    

GHex

Gitnuro is a Git client that allows you to manage multiple repositories with a modern experience and live visual representation of your repositories' state.

Gitnuro


      Cambalache is a new RAD tool that enables the creation of user interfaces
      for Gtk and the GNOME desktop environment.
    
      
      Cambalache's main target is Gtk version 4 but it has been designed from
      the ground up to support other versions.
    
    

Cambalache

Antares is an SQL client that aims to become an useful and complete tool, especially for developers. 
      The main goal is to develop a totally free, full featured, cross platform and open source alternative.
A modern application created with minimalism and semplicity in mind, with features in the right places, not hundreds of tiny buttons, nested tabs or submenu; productivity comes first.
      Supported database: 
      
        MySQL/MariaDB
        PostgreSQL
        SQLite
        Firebird SQL
      
    

Antares SQL

A modern, fast and productivity driven SQL client with a focus in UX


      ImHex is a modern Hex Editor for Reverse Engineers, Developers, Malware Analysists and Hackers who value
      their retinas when working at 3 AM once again.
    
      
      Features:
    
      
        Featureful hex view
        Custom C++-like pattern language for parsing and highlighting a file's content
        Data importing and exporting
        Data inspector allowing interpretation of data as many different types
        Huge file support with fast and efficient loading
        Strings search
        File hashing support
        Disassembler supporting many different architectures: ARM, x86, PowerPC, MIPS, and more
        Bookmarks
        Data analyzer
        
        Helpful tools such as an Itanium and MSVC demangler, ASCII table, Regex
        replacer, mathematical expression evaluator (calculator), hexadecimal
        color picker and many more
      
        Doesn't burn out your retinas when used in late-night sessions
      
    

ImHex

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

Qt Designer

RedisInsight is an intuitive and efficient GUI for Redis, allowing you to interact with
            your databases and manage your data—with built-in support for Redis modules.
      
            RedisInsight Highlights:
        
      
        Browse, filter, visualise your key-value Redis data structures and see key values in
                different formats (including JSON, Hex, ASCII, etc.)
        CRUD support for Lists, Hashes, Strings, Sets, Sorted Sets, and Streams
        CRUD support for RedisJSON
        Profiler - analyze every command sent to Redis in real-time
        SlowLog - analyze slow operations in Redis instances based on the Slowlog command
        Pub/Sub - support for Redis pub/sub, enabling subscription to channels and posting
                messages to channels
        Bulk actions - Delete the keys in bulk based on the filters set in Browser or Tree
                view
        Introducing Workbench - advanced command line interface with intelligent command
                auto-complete, complex data visualizations and support for the raw mode
        Command auto-complete support for RediSearch, RedisJSON, RedisGraph,
                RedisTimeSeries, RedisAI
        Visualizations of your RediSearch index, queries, and aggregations
        Ability to build your own data visualization plugins
        Built-in click-through guides for Redis capabilities
        Oficially supported for Redis OSS, Redis Cloud. Works with Microsoft Azure Cache for
                Redis (official support upcoming).
      
    

RedisInsight


      gitg is a graphical user interface for git. It aims at being a small,
      fast and convenient tool to visualize the history of git repositories.
      Besides visualization, gitg also provides several utilities to manage your
      repository and commit your work.
    
      Goals:
      
        Browse local git repositories
        Clone local and remote git repositories
        Commit files
        Retrieve patch from a commit
      
    

gitg

Psequel is a modern, yet another Postgres SQL client, build with GTK 4 and Libadwaita
      
        Create connection, import, export connection to database
        View tables, scshema, views, columns, indexes, foreign key
        Execute query, query history
      
      
            This project is not a part of or affiliated with PostgreSQL.
        
    

psequel

Sublime Merge is a Git client, from the makers of Sublime Text.

Sublime Merge

Sublime Merge is a Git client, from the makers of Sublime Text

&lt;em&gt;NOTE: This Flatpak is unofficial and not supported by Godot Engine developers.&lt;/em&gt; Find officially supported binaries on godotengine.org.Godot is an advanced, feature-packed, multi-platform 2D and 3D open source game engine.Create games with ease, using Godot's unique approach to game development.Nodes for all your needs. Godot comes with hundreds of built-in nodes that make game design a breeze. You can also create your own for custom behaviors, editors and much more.Flexible scene system. Create node compositions with support for instancing and inheritance.Visual editor with all the tools you need packed into a beautiful and uncluttered context-sensitive UI.Friendly content creation pipeline for artists, level designers, animators and everything in between.Persistent live editing where changes are not lost after stopping the game. It even works on mobile devices!Create your own custom tools with ease using the incredible tool system.Limitations of the Flatpak version:C#/.NET external editor support does not work out-of-the-box, though this is currently being discussed and worked on. See: https://github.com/flathub/org.godotengine.GodotSharp/issues/2External script editors are still supported (for use outside of C#/.NET), but you need to follow the steps described here: https://github.com/flathub/org.godotengine.GodotSharp#using-an-external-script-editorAfter the first C# script is created, it is necessary to click Build within Godot. Alternatively, running dotnet restore in the IDE's terminal would work as well.Godot 4's Blender importer is supported, but Blender needs to be installed on your system and you need to follow the steps described here: https://github.com/flathub/org.godotengine.GodotSharp#using-blender

Godot (C#/.NET)

An unofficial client to install Unreal Engine, download and manage purchased assets, projects, plugins and games from the Epic Games StoreFeatures:Downloading purchased assets from unreal marketplaceDownloading official binary Unreal Engine packagesAdding assets to projects and creating new projects from assetsListing and launching Unreal projectsListing and launching Unreal Engine installations

Epic Asset Manager

GoLand is a cross-platform IDE built specially for Go developers
      
      		GoLand is available for a free 30-day evaluation. Monthly and yearly subscription options are
      		available for companies and individual users.
    	
      
			If you want to use the Go installation of your system, flatpak mounts your root directory into /var/run/host .
			You can set your GOROOT accordingly (e.g. /var/run/host/usr/lib/go).
		
      NOTE: This wrapper is not verified by, affiliated with, or supported by JetBrains s.r.o.
    

GoLand

KDevelop is a Free and Open Source integrated development environment (IDE).
      It provides editing, navigation and debugging features for several programming languages, as well as integration with multiple build systems and version-control systems, using a plugin-based architecture.
      KDevelop has parser backends for C, C++ and Javascript/QML, with further external plugins supporting e.g. PHP or Python.
    

KDevelop

Featureful, plugin-extensible IDE for C/C++ and other programming languages


      Source Code Management system designed to manage your branches, record and backup your work, be your Git client, help with your code and much more.
    
    

GitButler

Git branch management tool, built from the ground up for modern workflows


			micro is a terminal-based text editor that aims to be easy to use and
			intuitive, while also taking advantage of the capabilities of modern terminals.
			It comes as a single, batteries-included, static binary with no dependencies;
			you can download and use it right now!
		
      
			As its name indicates, micro aims to be somewhat of a successor to the nano
			editor by being easy to install and use. It strives to be enjoyable as a full-time
			editor for people who prefer to work in a terminal, or those who regularly
			edit files over SSH.
		
    

Micro Text Editor

A modern and intuitive terminal-based text editor

Biblioteca lets you browse and read GNOME documentation. Among other things, Biblioteca comes with
      
        Offline documentation
        Web browsing
        Tabs
        Dark mode support
        Fuzzy search
        Mobile / adaptive
      
    

Biblioteca

The Clipboard Project is your new second brain.

This is an advanced clipboard manager that's super easy to use. Cut, copy and paste anything, anytime, anywhere with unlimited capacity, clipboards, and history!

Script CB to work superbly with your other favorite terminal tools. Integrate it with your existing system clipboards. Save time and effort the easy way.You can use CB from the desktop to monitor your clipboard status in real time.

To use CB from the terminal, do "flatpak run app.getclipboard.Clipboard". If you'd like to use the command "cb" instead, do "alias cb='flatpak run app.getclipboard.Clipboard'" to make a shortcut. Then, add that to your terminal startup file like .bashrc so that it works every time.

Clipboard

Cut, copy, and paste anything, anytime, anywhere

HTTPie Desktop is a cross-platform API testing client for humans. It offers all the user-friendliness of the terminal version of httpie, now wrapped up in a sleek graphical interface.Interact painlessly with APIsLeverage the power of AI-assisted workOrganize your work in spaces, collections, and tabsParametrize requests with variables and environmentsWork across devices with auto-save and realtime syncBuild and preview requests without sending themUse the app offline and without an account

HTTPie

Cross-platform API testing client for humans

Filius is a network simulator for educational purpose.

Filius

BlueJ is an education-focused interactive Java IDE. It provides a basic debugger and GUI-based method calling.

BlueJ

STM32CubeIDE is an advanced C/C++ development platform with peripheral configuration, code generation, code compilation, and debug features for STM32 microcontrollers and microprocessors. It is based on the ECLIPSE™/CDT framework and GCC toolchain for the development, and GDB for the debugging. It allows the integration of the hundreds of existing plugins that complete the features of the ECLIPSE™ IDE.STM32CubeIDE integrates all STM32CubeMX functionalities to offer all-in-one tool experience and save installation and development time. After the selection of an empty STM32 MCU or MPU, or preconfigured microcontroller or microprocessor from the selection of a board, the project is created and initialization code generated. At any time during the development, the user can return to the initialization and configuration of the peripherals or middleware and regenerate the initialization code with no impact on the user code.STM32CubeIDE includes build and stack analyzers that provide the user with useful information about project status and memory requirements.STM32CubeIDE also includes standard and advanced debugging features including views of CPU core registers, memories, and peripheral registers, as well as live variable watch, Serial Wire Viewer interface, or fault analyzer.Note: For flashing to work properly you will need to add udev rules according to your device. If your device has an id of 0483:374b (check lsusb), you will need to create a file in /etc/udev/rules.d/ with the contents: SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="374b", GROUP="users", MODE="0666" and either reboot or run: sudo udevadm control --reload

STM32CubeIDE

Integrated Development Environment for STM32

&lt;em&gt;NOTE: This Flatpak is unofficial and not supported by Godot Engine developers.&lt;/em&gt; Find officially supported binaries on godotengine.org.Godot is an advanced, feature-packed, multi-platform 2D and 3D open source game engine.Create games with ease, using Godot's unique approach to game development.Nodes for all your needs. Godot comes with hundreds of built-in nodes that make game design a breeze. You can also create your own for custom behaviors, editors and much more.Flexible scene system. Create node compositions with support for instancing and inheritance.Visual editor with all the tools you need packed into a beautiful and uncluttered context-sensitive UI.Friendly content creation pipeline for artists, level designers, animators and everything in between.Persistent live editing where changes are not lost after stopping the game. It even works on mobile devices!Create your own custom tools with ease using the incredible tool system.Limitations of the Flatpak version:For C#/Mono support, install org.godotengine.Godot3Sharp instead: https://flathub.org/apps/org.godotengine.Godot3SharpExternal script editors are supported, but you need to follow the steps described here: https://github.com/flathub/org.godotengine.Godot3#using-an-external-script-editor

Godot 3

SQuirreL SQL Client is a graphical Java program (GUI) that will allow you to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands etc. The Flatpak version currently includes drivers for MySQL, PostgreSQL, MariaDB, Actian Avalanche, Apache Derby, H2, HSQLDB, Microsoft MSSQL, Sybase, Mckoi, and SQLite.

SQuirreL SQL Client

SQuirreL SQL Client is a GUI that allows you to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands etc. Supports MySQL, PostgreSQL, MariaDB, and SQLite.

DIY Layout Creator (DIYLC in short) is a powerful, but simple to use and intuitive tool for visualizing electronic circuit schematic and layout diagrams. It provides a simple WYSIWYG interface and supports designing PCB, vero-board, point-to-point, perf-board and guitar wiring diagrams as well as circuit schematics quickly and without the steep learning curve.In addition to drawing, the projects can be shared with other users through the integrated 'Cloud' feature. Guitar wiring diagrams can be analyzed and debugged.DIYLC is geared towards DIY hobby enthusiasts and is developed by an enthusiast with the help of the large community of DIY builders.

DIY Layout Creator

Circuit layout design tool supporting PCB, vero-board, point-to-point, perf-board and guitar wiring diagrams

VSCodium Insiders combines the simplicity of a code editor with what developers need for the core edit-build-debug cycle.
      This is the telemetry-less version of Visual Studio Code, packaged into a Flatpak. This repackaging is not supported by Microsoft.
    

VSCodium - Insiders

Command line and GUI tools for producing Java source code from Android Dex and Apk files
      
        decompile Dalvik bytecode to java classes from APK, dex, aar, aab and zip files
        decode AndroidManifest.xml and other resources from resources.arsc
        deobfuscator included
        view decompiled code with highlighted syntax
        jump to declaration
        find usage
        full text search
        smali debugger
      
    

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