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.
389 Directory Server#
Enterprise-class Open Source LDAP server for Linux.
Bareos#
Cross-network backup solution which preserves, archives, and recovers data from all major operating systems.
BeanstalkD#
A simple, fast work queue.
Bind#
Versatile, classic, complete name server software.
Burp#
Network backup and restore program.
CFEngine#
Configuration management system for automated configuration and maintenance of large-scale computer systems.
Chrony#
A versatile implementation of the Network Time Protocol (NTP).
Claws Mail#
Old school email client (and news reader), based on GTK+.
Cockpit#
Web-based graphical interface for servers.
Collectd#
System statistics collection daemon.
DD-WRT#
A Linux-based firmware for wireless routers and access points, originally designed for the Linksys WRT54G series.
djbdns#
A collection of DNS applications, including tinydns.
dnsmasq#
Provides network infrastructure for small networks: DNS, DHCP, router advertisement and network boot.
DRBD#
Distributed replicated storage system, implemented as a Linux kernel driver.
Eggdrop#
The oldest Internet Relay Chat (IRC) bot still in active development.
Fossil#
Distributed version control with built-in wiki and bug tracking.
★? ? C BSD-2-Clause
FreeIPA#
Integrated security information management solution combining Linux (Fedora), 389 Directory Server, Kerberos, NTP, DNS, and Dogtag Certificate System (web interface and command-line administration tools).
★? ? Python C JavaScript GPL-3.0
FreeRADIUS#
Multi-protocol policy server (radiusd) that implements RADIUS, DHCP, BFD, and ARP and associated client/PAM library/Apache module.
Geany#
GTK2 text editor.
Git#
Distributed revision control and source code management (SCM) with an emphasis on speed.
GlusterFS#
Software-defined distributed storage that can scale to several petabytes, with interfaces for object, block and file storage.
GNU Emacs#
An extensible, customizable text editor-and more.
GNU Make#
The most popular automation build tool for many purposes, make is a tool which controls the generation of executables and other non-source files of a program from the program’s source files.
GoAccess#
Real-time web log analyzer and interactive viewer that runs in a terminal or through the browser.
Knot#
High performance authoritative-only DNS server.
KVM#
Linux kernel virtualization infrastructure.
Lustre#
Parallel distributed file system, generally used for large-scale cluster computing.
LXC#
Userspace interface for the Linux kernel containment features.
Mercurial#
Distributed source control management tool.
Monit#
Small utility for managing and monitoring Unix systems.
MooseFS#
Fault tolerant, network distributed file system.
mtr#
Network utility that combines traceroute and ping.
Mutt#
Small but very powerful text-based mail client.
Naemon#
Network monitoring tool based on the Nagios 4 core with performance enhancements and new features.
Nagios#
Computer system, network and infrastructure monitoring software application.
Nano#
Easy to use, customizable text editor.
NetXMS#
Open Source network and infrastructure monitoring and management.
NSD#
Authoritative DNS name server developed speed, reliability, stability and security.
★563 2026-07-16 C BSD-3-Clause
NTPsec#
A secure, hardened, and improved implementation of Network Time Protocol derived from NTP Classic.
★157 2026-07-18 C BSD-2-Clause
ocserv#
Cisco AnyConnect-compatible VPN server.
OpenAFS#
Distributed network file system with read-only replicas and multi-OS support.
OpenLDAP#
Open-source implementation of the Lightweight Directory Access Protocol (server, libraries and clients).
OpenNTPD#
A FREE, easy to use implementation of the Network Time Protocol.
OpenVox#
Community fork of the last open source version of Puppet, a software configuration management tool which includes its own declarative language to describe system configuration.
★177 2026-07-24 Ruby C Apache-2.0
OpenVPN#
Uses a custom security protocol that utilizes SSL/TLS for key exchange.
OpenVZ#
Container-based virtualization for Linux.
OpenWrt#
A Linux-based router featuring Mesh networking, IPS via snort and AQM among many other features.
OPNsense#
An open source FreeBSD-based firewall and router with traffic shaping, load balancing, and virtual private network capabilities.
★? ? C PHP BSD-2-Clause
Performance Co-Pilot#
Lightweight, distributed system performance and analysis framework.
Perkeep#
A set of open source formats, protocols, and software for modeling, storing, searching, sharing and synchronizing data (previously Camlistore).
★7219 2026-02-01 C Apache-2.0
QEMU#
QEMU is a generic machine emulator and virtualizer.
Remmina#
Feature-rich remote desktop application for linux and other unixes.
RRDtool#
Industry standard, high performance data logging and graphing system for time series data.
rsyslog#
Rocket-fast system for log processing.
Samba#
Active Directory and CIFS protocol implementation.
SoftEther#
Multi-protocol software VPN with advanced features.
★13419 2026-06-10 C Apache-2.0
strongSwan#
Complete IPsec implementation for Linux.
Subversion#
Client-server revision control system.
★? ? C Apache-2.0
Sylpheed#
Still developed predecessor to Claws Mail, lightweight mail client.
Sysdig#
Capture system state and activity from a running Linux instance, then save, filter and analyze.
★8272 2026-04-13 Docker Lua C Apache-2.0
systemd-nspawn#
Lightweight, chroot-like, environment to run an OS or command directly under systemd.
Thunderbird#
Free email application that’s easy to set up and customize.
Unbound#
Validating, recursive, and caching DNS resolver.
★4742 2026-07-24 C BSD-3-Clause
UrBackup#
Client/Server Open Source Network Backup for Windows, MacOS and Linux.
Vim#
A highly configurable text editor built to enable efficient editing.
Wazuh#
Unified XDR and SIEM protection for endpoints and cloud workloads.
WireGuard#
Very fast VPN based on elliptic curve and public key crypto.
Wireshark#
The world’s foremost network protocol analyzer.
XCP-ng#
Virtualization platform based on Xen Source and Citrix® Hypervisor (formerly XenServer).
Xen#
Virtual machine monitor for 32/64 bit Intel / AMD (IA 64) and PowerPC 970 architectures.
Yadifa#
Clean, small, light and RFC-compliant name server implementation developed from scratch by .eu.
★81 2026-03-24 C BSD-3-Clause
Zabbix#
Enterprise-class software for monitoring of networks and applications.