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

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  • 1

    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: 242 This Week
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  • 2

    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: 145 This Week
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  • 3
    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: 29 This Week
    Last Update:
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  • 4
    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: 19 This Week
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  • 5
    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: 15 This Week
    Last Update:
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  • 6
    Rain Bot

    Rain Bot

    [R]obot [a]ware [i]s [n]ot a [Bot]

    Development of a Robot using RobotC and Lego NXT. This is overall a way to play, learn and share about home made robot :-) v0.11 is currently available with Path Finding A*, motors & sensors emulation, and Robot odometry ;-). Follow its blog here : https://sourceforge.net/p/rainbot/blog/
    Downloads: 4 This Week
    Last Update:
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  • 7

    Morse Master

    Morse Coder / Encoder

    You can code to morse or enode from morse in a simple way. It's written in ANSI C, the source code is redy to be built for unix based systems. There can be bugs in it, but it does the work. I recommend the source code for those who are learning C.
    Downloads: 10 This Week
    Last Update:
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  • 8
    SNAKE GAME FOR PC

    SNAKE GAME FOR PC

    Simple snake game with classic design

    Glut snake is a pc game for windows platform. It is very simple and compact game. It is developed in C++ using openGL glut library. For best play, Windows 7 is recommended.
    Downloads: 1 This Week
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  • 9
    Arduino Launch Control System (LCS)

    Arduino Launch Control System (LCS)

    A single rod model rocket launch control system using the Arduino Nano

    This is a single rod model rocket launch control system. The system utilizes the Arduino Uno/Nano to report on local weather conditions (temperature, humidity, barometric pressure). The system also provides a 10-second countdown when the fire button is pressed. The system meets and exceeds the NAR Safety Code standard for model rocket launch systems as it incorporates a removable key to block the flow of power to the launch pad. It incorporates an additional two-button safety system to ensure that a launch is conducted exactly at the desired time. This release marks Version 1 of the system. It is designed to be modular so that it can be easily modified in the future. This project makes a great entry into electronics, Arduino and model rocketry. As such it is ideal for use in schools and youth organizations.
    Downloads: 1 This Week
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    Grafana: The open and composable observability platform

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  • 10

    megapacker

    pack selected file many times recursively

    It was written for the sake of joke. Suppose somebody asks you to archive and send one file. You can fast compress it many times(e.g. 2000). I am fond of a joke in such way at my Windows friends. Of course it could be written in Bash much easy, but in C it's much faster
    Downloads: 1 This Week
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  • 11
    Clockino

    Clockino

    Arduino led matrix clock with auto dimmer

    Downloads: 0 This Week
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  • 12
    Contest Arbitrator

    Contest Arbitrator

    Contest Evaluation software for RU-QRP Club and others

    Downloads: 0 This Week
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  • 13
    DefendLineII
    ATMEL ATMega1280 based powerful, multifunctional, reliable, expandable and extremely flexible hardware platform for home and industrial processes automation, robotic toys, security systems, education and enjoyment.
    Downloads: 0 This Week
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  • 14
    The Image Compare project provides two applications. The Image Compare application (imagecomp) is a tool to aid the visual comparison of two coin images. The Image Mask command line application prepares coin images for publication.
    Downloads: 0 This Week
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  • 15

    ImproK

    ImproK - Compteur de scores pour match d'improvisation

    ImproK est un logiciel permettant l'affichage de scores, avec compte-à-rebour. Les règles d'affichage sont adaptées à un match d'improvisation, mais peuvent facilement être modifiées pour correspondre à d'autres genres d'événements, par exemple des rencontres sportives.
    Downloads: 0 This Week
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  • 16
    Joyst.c written in Borland C.2.0 Subject inputs patient number, has the option of practice, then recordings begin. Horizontal bar records subject's pain level with manipulation of arrow keys or joystick int 15h,84. not USB joystick. File I/O.
    Downloads: 0 This Week
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  • 17

    Lanbahn

    Controlling Model Railroad via Networks

    Controlling Model Railroad via Networks "Lanbahn" Concepts - intelligent end devices - all with a network, wlan or other sophisticated interface. - can be operated without a central station - no complex binary protocols - communications via multicast UDP messages - decoders can advertise their capabilities via zeroconf/avahi/bonjour protocol. - raspberry pi as one hardware platform - tinkerforge IO bricklets for turnout and signal control
    Downloads: 0 This Week
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  • 18

    Model Railroad System

    The Model Railroad System can help you run your railroad.

    The Model Railroad System is a software package that can help you run your railroad. Download the Model Railroad System now and operate your layout, from running trains to working your signals and switches. This software package has support for a network of Bruce Chubb CMR/I USIC, SUSIC, and/or SMINI nodes and/or a network of Lenz’s XPressNet DCC nodes. It now supports Azatrax USB-connected Model Railroad Detectors. Software to create switch lists for freight car forwarding and creating timetables for your railroad are included. There is software to help with photographing of your trains and to compute the correct value for those pesky dropping resistors for LEDs and/or incandescent lamps. If you have a model railway, large or small, this software package will help you out.
    Downloads: 0 This Week
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  • 19

    Model Railroading with Arduino

    This project is about Model Railroading with Arduinos

    This project is about Model Railroading with Arduinos. It hosts Arduino Libraries and Sketches all in a single source code repository and downloadable file and is a place where people can contribute their own Model Railroad sketches and libraries.
    Downloads: 0 This Week
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  • 20
    Musino

    Musino

    Arduino music clock

    Arduino based alarm clock When alarm sounds the clock plays music Display is a MAX7219 32x8 LED matrix
    Downloads: 0 This Week
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  • 21
    A simple program to dump the nand and IPL on homebrew enabled PSPs for further r&d.
    Downloads: 0 This Week
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  • 22
    Nightsky is a very basic rendering of the stars in the sky for devices that aren't powerful enough to run Stellarium
    Downloads: 0 This Week
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  • 23
    Numismatic
    Numismatic is a simple Web-based application that may be used for storing and retrieving coin-related information. The software supports multiple users. The official source repository is located at https://github.com/textbrowser.
    Downloads: 0 This Week
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  • 24
    An open library for interfacing the Opal Kelly brand FPGA development boards.
    Downloads: 0 This Week
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  • 25
    Organino

    Organino

    Arduino light organ

    Downloads: 0 This Week
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