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.

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  • 1
    Data Crow

    Data Crow

    Your collection, your way

    Data Crow is an open source collection manager for movies & video (DivX, MP4, MKV, etc.), TV series, books (and eBooks), images, board games, comic books, games & software, and music (MP3 and other audio files). Besides these built-in modules (which you can customise to fit your needs) you can create entirely new ones. Want to catalogue your stamps, equipment, wine, or anything else? Data Crow makes it possible. Your collection is accessible the way you prefer: as a stand-alone desktop application, in server-client mode for shared access across multiple users or devices, via the web client in any browser, or on the go with the Data Crow Reader App. The app synchronises with your Data Crow installation and works fully offline. Private. Offline. Completely personal. The Data Crow way.
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    4.7 out of 5 stars 57 Reviews
    Downloads: 448 This Week
    Last Update:
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  • 2
    Grimmory

    Grimmory

    Grimmory is the successor of booklore

    Grimmory is a self-hosted digital library management platform designed to help users organize, read, and manage their entire book collection in a centralized and fully controlled environment. As the successor to Booklore, it expands on the idea of personal knowledge ownership by allowing users to store and interact with books without relying on third-party cloud services. The platform supports a wide range of formats, including eBooks, PDFs, comics, and audiobooks, making it versatile for different types of media consumption. It includes a built-in browser-based reader that allows users to read, annotate, and track progress directly within the application. Grimmory also emphasizes automation through features like metadata enrichment and automatic file ingestion, reducing manual effort when managing large collections. Multi-user support enables separate libraries, preferences, and reading progress for different users within the same instance.
    Downloads: 31 This Week
    Last Update:
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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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    4.8 out of 5 stars 6 Reviews
    Downloads: 172 This Week
    Last Update:
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  • 4
    Artisan

    Artisan

    artisan scope: the world's most trusted roasting software

    Artisan is a free, open-source coffee roasting application designed to record, analyze, and control roasting profiles. It provides real-time visualization of temperature measurements, roasting events, and rate-of-rise curves. The software connects to compatible roasting machines, thermocouples, data loggers, and temperature controllers. Users can monitor roast development, compare profiles, and record important stages such as first crack and drop time. Its analysis tools help evaluate roasting consistency, energy application, and temperature progression. Artisan also supports automation through compatible PID controllers and customizable roasting configurations. Available for Windows, macOS, Linux, and Raspberry Pi, it helps home enthusiasts and commercial coffee roasters improve consistency, document production, and refine roasting techniques.
    Downloads: 15 This Week
    Last Update:
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  • 5
    OpenRocket
    An Open Source model rocket simulator.
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    4.9 out of 5 stars 12 Reviews
    Downloads: 69 This Week
    Last Update:
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  • 6

    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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    4.2 out of 5 stars 12 Reviews
    Downloads: 76 This Week
    Last Update:
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  • 7
    BrickStore

    BrickStore

    An offline BrickLink inventory management tool

    BrickStore is an open-source inventory management application designed for LEGO collectors and BrickLink sellers. It allows users to organize, edit, and manage BrickLink inventories through an offline interface. The application provides fast catalog browsing with live search filters that use multiple processor cores. Users can create inventories by adding individual parts or breaking down complete LEGO sets. Integrated BrickLink price guide information helps determine appropriate item prices. BrickStore generates XML files for bulk inventory uploads and updates. It can retrieve store inventories and orders directly from BrickLink. Additional tools support inventory comparisons, obsolete item identification, unlimited undo and redo, and customized printing. It runs on Windows, macOS, Linux, Android, and iOS.
    Downloads: 8 This Week
    Last Update:
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  • 8
    cat-power
    Cat Power is an open-source project where a adorable virtual cat keeps you company right on your desktop while you work or multitask—allowing you to feed, style, color, and play with your pet anytime. You can unlock every single cat and gadget completely for free, with zero microtransactions or annoying ads!
    5.0 out of 5 stars 1 Review
    Downloads: 105 This Week
    Last Update:
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  • 9
    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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    4.8 out of 5 stars 5 Reviews
    Downloads: 39 This Week
    Last Update:
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  • 10
    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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    5.0 out of 5 stars 5 Reviews
    Downloads: 37 This Week
    Last Update:
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  • 11
    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).
    3.8 out of 5 stars 17 Reviews
    Downloads: 41 This Week
    Last Update:
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  • 12
    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.
    5.0 out of 5 stars 4 Reviews
    Downloads: 28 This Week
    Last Update:
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  • 13
    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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    5.0 out of 5 stars 4 Reviews
    Downloads: 21 This Week
    Last Update:
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  • 14
    Brew Guide

    Brew Guide

    整理咖啡豆库存,记录品鉴笔记,让冲煮有参考。

    Brew Guide 是一款免费、开源的中文咖啡应用,帮你整理咖啡豆库存、记录品鉴笔记,让每一步冲煮都有参考。支持拍照识别、快捷扣除、评分雷达图、分段计时和自定义冲煮方案。无需注册账号,数据默认保存在设备中,可选开启多设备同步;拍照识别需联网。支持 Android、iOS/iPadOS、macOS、Windows、Linux 和 Web/PWA。
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    Downloads: 81 This Week
    Last Update:
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  • 15

    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: 80 This Week
    Last Update:
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  • 16
    Fractalscope

    Fractalscope

    A cross-platform fractal explorer

    A tabbed document interface, cross-platform fractal explorer written in Qt. Emphasis is on ease of use and a fluid, non-blocking interface. Features include animated zooming and panning, arbitrary precision, and antialiasing. An introductory video is available to view here: https://www.youtube.com/watch?v=SXaqaun121E
    5.0 out of 5 stars 1 Review
    Downloads: 43 This Week
    Last Update:
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  • 17
    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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    5.0 out of 5 stars 2 Reviews
    Downloads: 23 This Week
    Last Update:
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  • 18
    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: 53 This Week
    Last Update:
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  • 19
    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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    4.0 out of 5 stars 4 Reviews
    Downloads: 22 This Week
    Last Update:
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  • 20
    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!
    5.0 out of 5 stars 2 Reviews
    Downloads: 13 This Week
    Last Update:
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  • 21
    KitchenOwl

    KitchenOwl

    Self-hosted grocery list and recipe manager

    KitchenOwl is a free, open-source, self-hosted grocery list and recipe management application designed for individuals, families, and shared households. Built with Flutter and Flask, it provides synchronized shopping lists across mobile, desktop, and web interfaces. Users can add grocery items and organize shopping activities with other household members in real time. Its recipe management tools allow ingredients to be transferred directly into shopping lists. KitchenOwl also includes meal planning features for organizing upcoming meals and coordinating grocery purchases. Household expense tracking helps users monitor purchases and manage shared balances. The application supports partial offline functionality and provides a privacy-friendly alternative to cloud-dependent grocery management services.
    Downloads: 1 This Week
    Last Update:
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  • 22
    Tonkatsu Box

    Tonkatsu Box

    Free open-source app to organize collections of retro games

    Tonkatsu Box is a free, open-source collection manager designed for organizing games, movies, television shows, anime, books, manga, music, and podcasts. It connects to multiple metadata catalogs to help users discover titles and build personalized libraries. The application tracks progress, ratings, completion dates, and detailed episode or chapter information. Users can organize collections through customizable views, tags, and filters. It also provides statistics, recommendations, release calendars, and visual collection boards. Import tools support services such as Steam, Trakt, MyAnimeList, and AniList. Additional features include tier lists, local backups, and collection sharing. Built with Flutter for Windows, macOS, Linux, and Android, Tonkatsu Box offers a centralized environment for managing entertainment collections.
    Downloads: 1 This Week
    Last Update:
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  • 23
    An easy photo viewer on desktop on Qt.
    Downloads: 23 This Week
    Last Update:
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  • 24
    3D advanced and realistic bus simulator. Reefer to http://virtualbus.info and http://forum.virtualbus.info for more details.
    Downloads: 20 This Week
    Last Update:
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  • 25
    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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    5.0 out of 5 stars 1 Review
    Downloads: 10 This Week
    Last Update:
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