Open Source C Software - Page 34
Sort By:
C Software
Browse free open source C Software and projects below. Use the toggles on the left to filter open source C Software by OS, license, language, programming language, and project status.
-
Secure File Transfer for Windows with Cerberus by RedwoodCerberus supports unlimited users and connections on a single IP, with built-in encryption, 2FA, and a browser-based web client — all deployable in under 15 minutes with a 25-day free trial.
-
Gemini 3 and 200+ AI Models on One PlatformBuild, govern, and optimize agents and models with Gemini Enterprise Agent Platform.
-
1
ISAM File handler
ISAM file handler compatible with the leading commercial ISAM
-
2
This project is an unoffcial and partial mirror of the SDL site. It only contains freely downloadable SDL materials. You can reach the official one at http://www.libsdl.org.
-
3
GT.M High end TP database engine
Industrial Strength NoSQL Application Development Platform
GT.M[tm] is a vetted industrial strength, transaction processing application platform consisting of a key-value database engine optimized for extreme transaction processing throughput & business continuity. -
4
LibVNCServer/LibVNCClient are cross-platform C libraries that allow you to easily implement VNC server or client functionality in your program.
-
$300 in Free Credit Towards Top Cloud ServicesStart your project in minutes. After credits run out, 20+ products include free monthly usage. Only pay when you're ready to scale.
-
5
Designed for the Sony Playstation 2, Argon, allows you to play multimedia files like XVID, DivX, and MP3. It is based off of the Simple Media Player (SMS) and offers an interface similar to that of the Playstation 3/PSP.
-
6
Rar Expander is a MacOSX program which extracts the files contained in single or multi-volume RAR archives. It uses the official unRAR library internally so it is fully compatible with archives produced by WinRAR.
-
7
sftp4tc
A file system plugin Total Commander
This plugin allows you to combine the power of Total Commander with the security of SFTP (using SSH) and the comfort of PuTTY. -
8
Providing an easy to use platform for running Ancient UNIX & BSD on windows.
-
9
Pioneers
Pioneers - The Settlers of Catan
Pioneers is an emulation of the board game The Settlers of Catan, which can be played over the internet. -
Custom VMs From 1 to 96 vCPUs With 99.95% UptimeLive migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
-
10
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 -
11
gltron was inspired by the film tron - actually, more by all the games that where inspired by the film tron :-) It's a game for one to four players, the objective is not to drive into a wall.
-
12
ext4magic project has been in deep sleep for 10 years and is now changing to abandoned. During this time, around 30 releases of the dependent e2fsprogs and library have been released. These changes are not reflected in the current ext4magic code, so current file systems are no longer compatible with ext4magic. User feedback shows that ext4magic can no longer successfully process current ext4 file systems. The clear recommendation to users is: please do not use ext4magic, it will no longer work correctly. For the packers in the various distributions, if you still provide packages for it, please stop supporting ext4magic as an optional package for your distribution. Otherwise you will only raise false hopes in users who have just had a data accident, and this tool can no longer live up to these hopes
-
13
OpenSC
OpenSC - tools and libraries for smart cards
The OpenSC project allows the use of PKCS #15 compatible SmartCards and other cryptographic tokens (e.g. the Aladdin eToken) in UNIX compatible operating systems. OpenSC can use PC/SC Lite or CT-API as its reader backend. https://github.com/OpenSC/OpenSC/wiki/OpenSC-Services -
14
Lexical Analyzer Generator Quex
Generator of lexical analyzers in C and C++. Unicode Supported.
The goal of this project is to provide a generator for lexical analyzers of maximum computational efficiency and maximum range of applications. This includes the support for Unicode (UTF8, UTF16, ...) and a large variety of other encodings directly and via nested converters such as ICU(tm) and IConv. Sophisticated buffer handling allows to operate on plain file streams, on sockets, or manually fed buffer content. 'Ready-to-build' examples explain related concepts and facilitate practical applications. -
15
pngcrush and other tools for manipulating PNG (Portable Network Graphics) and MNG (Multiple-image Network Graphics) files.
-
16
bash debugger
bash debugger
A gdb-like debugger for bash -
17
Sparse is a direct method solver for the large sparse matrices that are associated with electrical circuit simulation. It uses LU factorization and handles both real and complex square matrices.It is intended to solve many matrices with the same structure
-
18
TiEmu is an emulator of Texas Instruments hand-helds (TI89/92/92+/V200) for Linux & Windows written with GTK. Full-featured with a graphical debugger.
-
19
Allegro
The official Allegro 5 git repository. Pull requests welcome
Allegro 5 is the latest major revision of the Allegro library, designed to take advantage of modern hardware, including hardware acceleration using 3D cards. -
20
Crafting Interpreters
Repository for the book "Crafting Interpreters"
This repository is the companion to the book Crafting Interpreters. It contains the full source code for two interpreters (one in C and one in Java), the Markdown source of the book, the tooling to weave prose and code into a website, and build scripts to generate the executable interpreters. The book aims to teach from the ground up how to build a full-featured scripting language (called Lox) with parsing, AST, compiler / VM, garbage collection, classes, and more. Static site generator tooling to compose book + code into HTML. Markdown source of book chapters and text prose. Full interpreter implementation in C (clox). -
21
Mongoose Embedded Web Server
An embedded web server
Mongoose is a networking library for C/C++. It implements event-driven non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT. It is designed for connecting devices and bringing them online. On the market since 2004, used by vast number of open source and commercial products - it even runs on the International Space Station! Mongoose makes embedded network programming fast, robust, and easy. Cross-platform, works on Linux/UNIX, MacOS, Windows, Android, FreeRTOS, etc. Supported embedded architectures: ESP32, NRF52, STM32, NXP, and more. Built-in protocols: plain TCP/UDP, HTTP, MQTT, Websocket. SSL/TLS support: mbedTLS, OpenSSL or custom (via API). Used to solve a wide range of business needs, like implementing Web UI interface on devices, RESTful API services, telemetry data exchange, remote control for a product, remote software updates, remote monitoring, and others. -
22
NSync
nsync is a C library that exports various synchronization primitives
nsync is a portable C library that provides a collection of advanced synchronization primitives designed to facilitate safe and efficient multithreaded programming. It offers reader-writer locks, condition variables, run-once initialization, waitable counters, and waitable bits for coordination and cancellation between threads. Unlike traditional pthreads-based synchronization, nsync introduces conditional critical sections, allowing developers to wait for arbitrary conditions without explicit signaling or complex loop-based logic. This approach simplifies concurrency management and often improves readability and maintainability of multithreaded code. The library emphasizes efficiency, with locks and condition variables occupying minimal memory and supporting cancellation mechanisms through nsync_note objects rather than thread-level cancellation. Designed with portability and performance in mind, nsync can be compiled on Unix-like systems and Windows using a C90 compiler. -
23
Openwifi
open-source IEEE 802.11 WiFi baseband FPGA (chip) design
Linux mac80211 compatible full-stack IEEE802.11/Wi-Fi design based on SDR (Software Defined Radio). -
24
PgBouncer
lightweight connection pooler for PostgreSQL
PgBouncer is a lightweight, high-performance connection pooler for PostgreSQL. It reduces the overhead of frequent connection handling by maintaining a pool of open connections, which are reused by client applications. PgBouncer supports various pooling modes, transaction-level handling, and authentication mechanisms, making it essential for scaling Postgres-backed applications. -
25
ProcMon for Linux
A Linux version of the Procmon Sysinternals tool
ProcMon-for-Linux by Microsoft is an open-source port of the legendary Windows Sysinternals Process Monitor, adapted for Linux environments. It captures and displays real-time syscall activities—alongside process/thread details—in an interactive terminal interface. With filtering capabilities, full thread stack capture, logging to SQLite, and event replay, it offers powerful visibility into system behavior. Currently distributed as a preview release (up to v2.0 on Linux), it supports Ubuntu 18.04 kernels 4.18–5.3 with plans to expand compatibility across more distributions.
