C#

C is a general-purpose computer programming language.


Software#

This page lists all projects using this programming language or deployment platform. Only the main server-side requirements, packaging or distribution formats are considered.


0 A.D.#

A free, open-source game of ancient warfare.

Website Source Code

★2671 2024-05-21 C++ C deb MIT GPL-2.0 Zlib

Games


Asterisk#

Easy to use but advanced IP PBX system, VoIP gateway and conference server.

Website Source Code

★1974 2024-05-17 C deb GPL-2.0

Communication - SIP


Cgit#

A fast lightweight web interface for git repositories.

Website Source Code

★? ? C GPL-2.0

Software Development - Project Management


Citadel#

Groupware including email, calendar/scheduling, address books, forums, mailing lists, IM, wiki and blog engines, RSS aggregation and more.

Website Source Code

★? ? C Docker Shell GPL-3.0

Groupware


Courier MTA#

Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services.

Website Source Code

★? ? C deb GPL-3.0

Communication - Email - Mail Transfer Agents


CUPS#

The Common Unix Print System uses Internet Printing Protocol (IPP) to support printing to local and network printers.

Website Source Code

★917 2024-05-21 C GPL-2.0

Miscellaneous


Cyrus IMAP#

Email (IMAP/POP3), contacts and calendar server.

Website Source Code

★515 2024-05-21 C BSD-3-Clause-Attribution

Communication - Email - Mail Delivery Agents


Domoticz#

Home Automation System that lets you monitor and configure various devices like: Lights, Switches, various sensors/meters like Temperature, Rain, Wind, UV, Electra, Gas, Water and much more.

Website Source Code Clients

★3426 2024-05-21 C C++ Docker Shell GPL-3.0

Internet of Things (IoT)


Dovecot#

IMAP and POP3 server written primarily with security in mind.

Website Source Code

★911 2024-05-14 C deb MIT LGPL-2.1

Communication - Email - Mail Delivery Agents


DragonFly#

A small MTA for home and office use. Works on Linux and FreeBSD.

Website Source Code

★222 2024-05-06 C BSD-3-Clause

Communication - Email - Mail Transfer Agents


Exim#

Message transfer agent (MTA) developed at the University of Cambridge.

Website Source Code

★? ? C deb GPL-3.0

Communication - Email - Mail Transfer Agents


Flexisip#

A complete, modular and scalable SIP server, includes a push gateway, to deliver SIP incoming calls or text messages on mobile device platforms where push notifications are required to receive information when the app is not active in the foreground.

Website Source Code

★135 2024-05-20 C Docker AGPL-3.0

Communication - SIP


Fossil#

Distributed version control system featuring wiki and bug tracker.

Website Source Code

★? ? C BSD-2-Clause-FreeBSD

Software Development - Project Management


FreeSWITCH#

Scalable open source cross-platform telephony platform.

Website Source Code

★3198 2024-05-19 C MPL-2.0

Communication - SIP


GNUnet#

Free software framework for decentralized, peer-to-peer networking.

Website Source Code

★? ? C GPL-3.0

Communication - Custom Communication Systems


GoAccess#

Real-time web log analyzer and interactive viewer that runs in a terminal.

Website Source Code

★17605 2024-05-21 C GPL-2.0

Analytics


Guacamole#

Guacamole is a clientless remote desktop gateway. It supports standard protocols like VNC and RDP.

Website Source Code

★2918 2024-05-02 Java C Apache-2.0

Remote Access


Icecast 2#

Streaming audio/video server which can be used to create an Internet radio station or a privately running jukebox and many things in between.

Website Source Code Clients

★? ? C GPL-2.0

Media Streaming - Multimedia Streaming


iodine#

IPv4 over DNS tunnel solution, enabling you to start up a socks5 proxy listener.

Website Source Code

★5818 2023-11-29 C deb ISC

Proxy


Janus#

General-purpose, lightweight, minimalist WebRTC Server.

Website Source Code Demo

★7843 2024-05-21 C GPL-3.0

Communication - Video Conferencing


Kamailio#

Modular SIP server (registrar/proxy/router/etc).

Website Source Code

★2148 2024-05-20 C deb GPL-2.0

Communication - SIP


ngircd#

Free, portable and lightweight Internet Relay Chat server for small or private networks.

Website Source Code

★426 2024-04-26 C deb GPL-2.0

Communication - IRC


Nominatim#

Server application for geocoding (address -> coordinates) and reverse geocoding (coordinates -> address) on OpenStreetMap data.

Website Source Code

★2916 2024-05-15 C GPL-2.0

Maps and Global Positioning System (GPS)


openSIPS#

OpenSIPS is an Open Source SIP proxy/server for voice, video, IM, presence and any other SIP extensions.

Website Source Code

★1202 2024-05-18 C GPL-2.0

Communication - SIP


OpenSMTPD#

Secure SMTP server implementation from the OpenBSD project.

Website Source Code

★? ? C deb ISC

Communication - Email - Mail Transfer Agents


OpenSSH SFTP server#

Secure File Transfer Program.

Website Source Code

★? ? C deb BSD-2-Clause

File Transfer & Synchronization


OwnTracks Recorder#

Store and access data published by OwnTracks location tracking apps.

Website Source Code

★801 2024-04-02 C Lua deb Docker GPL-2.0 ⚠ Anti-features

Maps and Global Positioning System (GPS)


Piler#

Feature-rich email archiving solution.

Website Source Code

★? ? C GPL-3.0

Communication - Email - Mail Delivery Agents


Postfix#

Fast, easy to administer, and secure Sendmail replacement.

Website Source Code

★? ? C deb IPL-1.0

Communication - Email - Mail Transfer Agents


Privoxy#

Non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk.

Website Source Code

★? ? C deb GPL-2.0

Proxy


ReadyMedia#

Simple media server software, with the aim of being fully compliant with DLNA/UPnP-AV clients. Formerly known as MiniDLNA.

Website Source Code

★? ? C GPL-2.0

Media Streaming - Multimedia Streaming


Red Eclipse 2#

A FOSS Arena First-Person Shooter Similar to Unreal Tournament.

Website Source Code

★411 2024-05-21 C C++ deb Zlib MIT CC-BY-SA-4.0

Games


Rygel#

Rygel is a UPnP AV MediaServer that allows you to easily share audio, video, and pictures. Media player software may use Rygel to become a MediaRenderer that may be controlled remotely by a UPnP or DLNA Controller.

Website Source Code

★? ? C GPL-3.0

Media Streaming - Multimedia Streaming


Samba#

Samba is the standard Windows interoperability suite of programs for Linux and Unix. It provides secure, stable and fast file and print services for all clients using the SMB/CIFS protocol.

Website Source Code

★? ? C GPL-3.0

File Transfer & Synchronization


SANE Network Scanning#

Allow remote clients to access image acquisition devices (scanners) available on the local host.

Website Source Code

★? ? C GPL-2.0

Miscellaneous


Seafile#

File hosting and sharing solution primary for teams and organizations.

Website Source Code

★11708 2024-05-20 C GPL-2.0 GPL-3.0 AGPL-3.0 Apache-2.0

File Transfer & Synchronization


Sendmail#

Message transfer agent (MTA).

Website Source Code

★? ? C deb Sendmail

Communication - Email - Mail Transfer Agents


sist2#

Lightning-fast file system indexer and search tool.

Website Source Code

★775 2024-04-26 C Docker GPL-3.0

Search Engines


Squid#

Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages.

Website Source Code

★? ? C deb GPL-2.0

Proxy


Tasmota#

Open source firmware for ESP devices. Total local control with quick setup and updates. Control using MQTT, Web UI, HTTP or serial. Automate using timers, rules or scripts. Integration with home automation solutions.

Website Source Code

★21567 2024-05-21 C C++ GPL-3.0

Internet of Things (IoT)


Tinyproxy#

Light-weight HTTP/HTTPS proxy daemon.

Website Source Code

★4592 2024-05-08 C deb GPL-2.0

Proxy


Tox#

Distributed, secure messenger with audio and video chat capabilities.

Website Source Code

★2175 2024-04-27 C GPL-3.0

Communication - Custom Communication Systems


UnrealIRCd#

Modular, advanced and highly configurable IRC server written in C for Linux, BSD, Windows, and macOS.

Website Source Code

★406 2024-05-20 C GPL-2.0

Communication - IRC


VideoLAN Client (VLC)#

Cross-platform multimedia player client and server supporting most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols.

Website Source Code

★? ? C deb GPL-2.0

Media Streaming - Video Streaming


Weechat#

Fast, light and extensible chat client.

Website Source Code

★2846 2024-05-21 C Docker deb GPL-3.0

Communication - IRC


µStreamer#

Lightweight and very quick server to stream MJPEG video from any V4L2 device to the net.

Website Source Code

★1581 2024-05-15 C deb GPL-3.0

Media Streaming - Multimedia Streaming