Browse free open source Hobbies software and projects below. Use the toggles on the left to filter open source Hobbies software by OS, license, language, programming language, and project status.

  • Orchestrate Your AI Agents with Zenflow Icon
    Orchestrate Your AI Agents with Zenflow

    The multi-agent workflow engine for modern teams. Zenflow executes coding, testing, and verification with deep repo awareness

    Zenflow orchestrates AI agents like a real engineering system. With parallel execution, spec-driven workflows, and deep multi-repo understanding, agents plan, implement, test, and verify end-to-end. Upgrade to AI workflows that work the way your team does.
    Try free now
  • Auth0 for AI Agents now in GA Icon
    Auth0 for AI Agents now in GA

    Ready to implement AI with confidence (without sacrificing security)?

    Connect your AI agents to apps and data more securely, give users control over the actions AI agents can perform and the data they can access, and enable human confirmation for critical agent actions.
    Start building today
  • 1
    Data Crow

    Data Crow

    The ultimate cataloguer

    Data Crow allows you to use the standard movie & video (divx, xvid, DVD, Blu-ray, etc), book (and eBooks), images, board games, comic books, games & software, music (mp3 and other music files) cataloguing modules. Besides these modules, which you can change to fit your requirements, you can create new modules (want to catalogue your stamps, equipment, or anything else?). The GUI is skinnable. Reporting (using JasperReports and their community edition JasperSoft Developer Studio ), loan administration, item importing & exporting, backup & restore and many other optional features are waiting for you.
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    Downloads: 267 This Week
    Last Update:
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  • 2

    nestopiaue

    Nestopia UE

    This project is a fork of the original Nestopia source code, plus the Linux port. The purpose of the project is to enhance the original, and ensure it continues to work on modern operating systems.
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    Downloads: 244 This Week
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  • 3
    GEDKeeper

    GEDKeeper

    GEDKeeper - opensource and crossplatform genealogy management program

    GEDKeeper program is developed for work with personal genealogical database. The program is designed for extremely simple and intuitive interface. The program is very easy to install on the computer, fully supports the GEDCOM format, has no restrictions on the number of persons and generations, allows you to generate pedigrees, building several tree species, as well as print and save their images, provides fast navigation, filtering, searching and adding multimedia materials. In addition there is an output of geographic data on Google maps (© Google). The aim of the program is as quick and effective means of conducting personal genealogical database. We invite native speakers to improve the translation of the program on the Crowdin platform: https://crowdin.com/project/gedkeeper Project is published on GitHub, url: https://github.com/Serg-Norseman/GEDKeeper
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    Downloads: 247 This Week
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  • 4
    FetLife for Android

    FetLife for Android

    The FetLife App on Android

    This is the FetLife open source application made for Android. FetLife is the app for Kinksters who want to chat with fellow Kinksters, find out where the nearest FetLife events are happening, view other members’ profiles, and many other kinky things. With FetLife on Android, it’s easier than ever to access all the things you love about FetLife. Get notified on your Android phone so you stay on top of conversations and discussions, and discover the latest events on the app’s map. Want to be discreet? No problem, as the FetLife app comes with discreet mode so you can use the app freely without worries.
    Downloads: 18 This Week
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
    Learn More
  • 5

    Digital Modellbahn

    Digitale Modellbahnsteuerung

    Projekt Files für den Eigenbau von (Modellbahn) Elektronik. Hinweis: Die auf dieser Homepage vorgestellte Software, Schaltungen und Layouts können für den privaten Gebrauch frei genutzt werden, eine kommerzielle Verwertung bedarf einer schriftlichen Genehmigung
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    Downloads: 256 This Week
    Last Update:
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  • 6
    RocksmithToTab

    RocksmithToTab

    Exports Rocksmith 2014 songs to Guitar Pro tabs

    Exports Rocksmith 2014 arrangements to Guitar Pro tabs (.gp5, .gpx). It parses Rocksmith's .psarc archives and converts any songs found within to tablature. All the Rocksmith techniques are supported and translated, and you get all of the chord diagrams and fingering hints that Rocksmith shows you. It's a great way to figure out specific parts of a song, and Guitar Pro's speed trainer is a very good alternative to the riff repeater. All arrangement types (bass, lead, rhythm) can be exported, either together in a single tab or into separate tabs.
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    Downloads: 38 This Week
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  • 7
    OpenRocket
    An Open Source model rocket simulator.
    Downloads: 27 This Week
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  • 8
    IDTE- ID3 Tag Editor

    IDTE- ID3 Tag Editor

    A Smarter Way to Tag FLAC, Vorbis, Lyrics, WMA, WavPack, and ID3 Tags

    IDTE is a full-featured tag editor for Windows that supports tagging of FLAC, APE, ID3v1.x/2.x, WMA, Lyrics, and Vorbis metadata in audio files. It also includes a powerful audio player with support for 40+ lossy and lossless formats, including FLAC, ALAC, OGG, APE, MP3, and more. IDTE offers a wide range of advanced features: • Rename files using tag information • Export and manage tag data • Create and manage playlists • Search online for missing or incomplete tags • Fetch lyrics and album artwork • Full CUE sheet support • Batch processing and multi-file editing • SFX, visualizations, and more A new, minimalistic version of IDTE is also available for download: https://sourceforge.net/projects/idte ⚠️ Important Notice Tagging MP4 video files and WAV audio files using IDTE is not recommended. WAV tag support is ambiguous and inconsistently handled across players (see: http://wiki.audacityteam.org/wiki/WAV).
    Downloads: 33 This Week
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  • 9
    QuickPlay

    QuickPlay

    Retro-Gaming Multi-Emulator Frontend. Frontend-of-Frontends

    Welcome to the QuickPlay homepage. QuickPlay - MAME Edition is a powerful Windows universal emulator frontend, which has support for countless emulators, systems, game sets and other emulation frontend projects. Its main focus is on being user friendly, simple to set up, yet thorough: its a combined searchable library for all of your retro-gaming...It has a novel Emulator Finder system that takes the hassle out of initial setup and ongoing maintainance
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    Downloads: 31 This Week
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  • eProcurement Software Icon
    eProcurement Software

    Enterprises and companies seeking a solution to manage all their procurement operations and processes

    eBuyerAssist by Eyvo is a cloud-based procurement solution designed for businesses of all sizes and industries. Fully modular and scalable, it streamlines the entire procurement lifecycle—from requisition to fulfillment. The platform includes powerful tools for strategic sourcing, supplier management, warehouse operations, and contract oversight. Additional modules cover purchase orders, approval workflows, inventory and asset management, customer orders, budget control, cost accounting, invoice matching, vendor credit checks, and risk analysis. eBuyerAssist centralizes all procurement functions into a single, easy-to-use system—improving visibility, control, and efficiency across your organization. Whether you're aiming to reduce costs, enhance compliance, or align procurement with broader business goals, eBuyerAssist helps you get there faster, smarter, and with measurable results.
    Learn More
  • 10
    LPub3D

    LPub3D

    LDraw™ editor for LEGO® style digital building instructions.

    LPub3D is an Open Source WYSIWYG editing application for creating LEGO® style digital building instructions. LPub3D is developed and maintained by Trevor SANDY. It uses the LDraw™ parts library, the most comprehensive library of digital Open Source LEGO® bricks available (www.ldraw.org/ ) and reads the LDraw LDR and MPD model file formats. LPub3D is available for free under the GNU Public License v3 and runs on Windows, Linux and macOS Operating Systems. LPub3D is also available as a Linux 'no-install', multi-platform AppImage. Portions of LPub3D are based on LPUB© 2007-2009 Kevin Clague, LeoCAD© 2025 Leonardo Zide, LDView© 2025 Travis Cobbs & Peter Bartfai and additional third party components. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this application. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this application. © 2015-2025 Trevor SANDY
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    Downloads: 25 This Week
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  • 11
    crosti

    crosti

    Build your personal cross stitches!

    This tool allows you to make your own unique cross stitch design from custom image. You can resize and rotate image, reduce the number of colors, change image palette, make cross stitch design, preview it, save and print. Cross stitch design edition available: colors and icons changing, new color addition, color fill, pixel draw, lines and half-stitches.
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    Downloads: 22 This Week
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  • 12
    Civ VI Replay

    Civ VI Replay

    Replay and analyse your Civ VI game

    Analyse, learn, progress with this tool by replaying your game and look over your opponent strategies. Load one or multiple saves and explore the state of the turn. Instruction Menu -> Open if you want to load a single save Menu -> Open Directory and select a folder. If you want to look at your whole game, setup your game by saving each turn and load the auto (located usually at "..Document\My Games\Sid Meier's Civilization VI\Saves")
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    Downloads: 61 This Week
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  • 13
    Origami Editor 3D

    Origami Editor 3D

    Virtual paper folding program

    Origami Editor 3D is an advanced paper folding simulator. It uses a what-you-see-is-what-you-get interface and operates with a geometric abstraction of the Yoshizawa-Randlett system. Anything from a simple airplane to John Montroll's omega star can be folded in this editor. Origami files created with the program preserve the entire folding process, and they can be exported as folding diagrams in PDF, animated GIF files, or even as standalone Java programs displaying the origami in a 3D viewer when opened. The main purpose of this program is designing origami, but if you only want to learn how to make some origami figures, there is a set of built-in example files that can help you. Currently, there are 34 example figures available. Please note that this project was created for fun and still is a work in progress. The Discussion forum is open for anyone who wants to report a bug or suggest a new feature. User Guide: http://origamieditor3d.sourceforge.net/userguide/en/index.html
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    Downloads: 26 This Week
    Last Update:
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  • 14
    NoteTrainer PRO

    NoteTrainer PRO

    Trains quickly score reading and piano playing (MIDI-keyboard)

    The main purpose of NoteTrainer PRO is developing the ability of quickly reading and playing notes "at sight." The program generates a random sequence of notes in the range selected by the user, and controls the speed and accuracy of their playing. Instead of random notes can be loaded not very complex melodies in MusicXML format and practice by studying them. Input the notes possible not only with MIDI-keyboard, but from the PC-keyboard, as well as using the virtual keyboard.
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    Downloads: 18 This Week
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  • 15
    Bracelet Generator

    Bracelet Generator

    A friendship bracelet pattern designer.

    Bracelet Generator is a friendship bracelet pattern designer. It enables you to easily design your own patterns, add rows and strings, change the colors. The pattern can also be symmetrized. With the two-colored motif editor, create your motif and the pattern will automatically be generated. The motif can be rotated and symmetrized. The patterns can be exported in .png, .jpeg and .ps.
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    Downloads: 30 This Week
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  • 16
    IMG4DC – Dreamcast Selfboot Toolkit

    IMG4DC – Dreamcast Selfboot Toolkit

    Generate ready-to-use disc images for your Sega Dreamcast system !

    IMG4DC is a tools package containing two utilities to generate selfboot disc images for your Sega Dreamcast: cdi4dc, designed to make Padus DiscJuggler (CDI) images and mds4dc, designed to make Alcohol 120% (MDS/MDF) images. A selfboot image is a disc image format specially prepared to boot on your Dreamcast. In clear, by burning a selfboot image to a standard blank CD-R, the software containted into this disc image will run onto your Dreamcast, as a legit game disc, without any modchip or other hacking device. To use this software package, you must have mkisofs from the cdrtools project. This tool will create the ISO image needed by img4dc. If you want to learn more by the selfboot image format, click here: http://dcemulation.org/?title=Selfboot_formats
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    Downloads: 9 This Week
    Last Update:
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  • 17
    A tool to calculate placement of holes on a tin whistle.
    Downloads: 7 This Week
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  • 18
    LEDSpicer

    LEDSpicer

    LEDSpicer a LED Animator and Controller for Linux

    LEDSpicer is a linear LED controller daemon that will handle single color or a RGB LEDs connected to different devices. It allows the execution of animations and profiles and handle can input to interact with the LEDs, profiles can be triggered based on different events, like programs running, network input, game name, etc. Includes some utilities to make an arcade cabinet more attractive and cool!
    Downloads: 13 This Week
    Last Update:
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  • 19
    Hiper Character Maker 2.1
    Faça seus personagens para seus jogos no RPG Maker usando o Hiper Character Maker. Você pode criar seus próprios pacotes de imagens e compartilhar com seus amigos! Faça seus próprios resources!
    Downloads: 7 This Week
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  • 20
    gditools

    gditools

    A Python program/library aimed at GD-ROM image files.

    This Python program/library is designed to handle GD-ROM image (GDI) files. It can be used to list files, extract data, generate sorttxt file, extract bootstrap (IP.BIN) file and more. This project can be used in standalone mode, in interactive mode or as a library in another Python program (check the 'addons' folder to learn how). For your convenience, you can use the gditools.py GUI program supplied in the Files section (optional). To use this project you must install the Python 2.7.x branch release binaries. See the README.TXT file for more informations.
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    Downloads: 19 This Week
    Last Update:
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  • 21
    Plume Creator
    With Plume Creator, organize your writing projects ! Scenes, notes, characters,... Rich Text editing, full screen editing and multiple projects supported. Languages : english, french, italian, german, portuguese.
    Downloads: 14 This Week
    Last Update:
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  • 22
    PS-Drone

    PS-Drone

    Programming a Parrot AR.Drone 2.0 with Python - The Easy Way

    The PS-Drone-API is a full featured SDK, written in and for Python, for Parrot's AR.Drone 2.0. It was designed to be easy to learn, but it offers the full set of the possibilities of the AR.Drone 2.0, including Sensor-Data (aka NavData), Configuration and full Video-support. The video function is not restricted to mere viewing, it is also possible to analyze video images data using OpenCV2. Obviously, the PS-Drone is perfect for teaching purposes; however, even the requirements for professional purposes can be satisfied. PS-Drone comes with a tutorial, explaining its most important commands and the drone's most important sensor values. The examples are easy to understand for people with little programming experience. A full list of commands and a description of all sensor data is available in a detailed documentation. It took several months to create PS-Drone, so it would be nice to get some donations for further development (e.g. Parrot's Bebop) and as a appreciation.
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    Downloads: 4 This Week
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  • 23
    A highly configurable recipe manager, designed to make organizing your personal recipes collection fast and easy. Features include: shopping lists, nutrient analysis, advanced search, recipe ratings, import/export various formats, and more.
    Downloads: 4 This Week
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  • 24
    YAPCG - 2025

    YAPCG - 2025

    Yet Another Pathfinder Character Generator - with Gestalt

    Yet Another Pathfinder Character Generator (YAPCG) is an Excel spreadsheet designed to help you create and manage your character for the table-top role-playing game Pathfinder (1st edition), including Gestalt characters. It is an Excel-only spreadsheet, and will not function properly with OpenOffice, LibreOffice, Google Sheet, or others.
    Downloads: 13 This Week
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  • 25
    NBTV Design Tools

    NBTV Design Tools

    SW Tools + HW design example for Mechanical Narrow Band TV

    This project contains useful software tools to create a NBTV (Narrow Band Television) video source (+audio, and optionally with color) on a classical 2-channel PC audio output. It also includes a document on a hardware example explained in details, as well as how to use software tools.
    Downloads: 12 This Week
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