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Top 23 C Server Projects
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Project mention: S3 scales to petabytes a second on top of slow HDDs | news.ycombinator.com | 2025-09-24
Doing some light googling aside from Ceph being listed, there's one called Gluster as well. Hypes itself as "using common off-the-shelf hardware you can create large, distributed storage solutions for media streaming, data analysis, and other data- and bandwidth-intensive tasks."
It's open source / free to boot. I have no direct experience with it myself however.
https://www.gluster.org/
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open62541
Open source implementation of OPC UA (OPC Unified Architecture) aka IEC 62541 licensed under Mozilla Public License v2.0
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magma
The magma server daemon, is an encrypted email system with support for SMTP, POP, IMAP, HTTP and MOLTEN,. Additional support for DMTP and DMAP is currently in active development.
Project mention: Homeland Security Wants Social Media Sites to Expose Anti-ICE Accounts | news.ycombinator.com | 2026-02-13I had an account at the time! He gave the govt the key, handwritten on paper, to stall for time so he could delete everything. I wish every admin had that sort of integrity.
He had some followup project, magma (https://github.com/lavabit/magma), that was supposed to be a secure email alternative. It's a shame it never took off.
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Icecast
Icecast streaming media server (Mirror) - Please report bugs at https://gitlab.xiph.org/xiph/icecast-server/issues
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Project mention: GitHub is no longer independent at Microsoft after CEO resignation | news.ycombinator.com | 2025-08-11
Didn't nobody ever tell you to "never say never" ?
Knot DNS[1] good enough for you ? GPL licensed.
[1] https://gitlab.nic.cz/knot/knot-dns
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c-web-modules
A modular web framework for C, inspired by kernel modules. Dynamically upload and compile C code at runtime to build REST APIs, WebSocket services, and more. Includes support for JSON (Jansson), SQLite, OpenSSL, and streaming large data efficiently.
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Project mention: Autark: Rethinking build systems – Integrate, Don’t Outsource | dev.to | 2025-11-04
github.com/Softmotions/iwnet
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Wakupator
Automatically starts machines based on incoming traffic, using smart local IP spoofing and Wake-on-LAN.
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GNSSTimeServer
Ethernet/WiFi-enabled GNSS (GPS, BeiDou, GLONASS, Galileo) fed NTP/RDATE/PTP server based on ESP8266/ESP32 and Arduino
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C Server discussion
C Server related posts
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Openrsync: A BSD-licensed implementation of rsync, by the OpenBSD team
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S3 scales to petabytes a second on top of slow HDDs
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Bananas: Cross-Platform screen sharing made simple
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Coturn: Open-Source Turn Server for Efficient Nat Traversal
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A Linux Optimizer Script
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How to setup and configure TURN server using coTURN?
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Self-hosted real-time audio streaming
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A note from our sponsor - SaaSHub
www.saashub.com | 6 Jun 2026
Index
What are some of the best open-source Server projects in C? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | coturn | 14,066 |
| 2 | GlusterFS | 5,185 |
| 3 | open62541 | 3,128 |
| 4 | magma | 1,839 |
| 5 | Iodine | 970 |
| 6 | agoo | 928 |
| 7 | t2sde | 643 |
| 8 | ngircd | 563 |
| 9 | Icecast | 542 |
| 10 | FastWSGI | 511 |
| 11 | iso14229 | 342 |
| 12 | Knot DNS | 306 |
| 13 | c-web-modules | 209 |
| 14 | iwnet | 183 |
| 15 | Wakupator | 173 |
| 16 | GNSSTimeServer | 176 |
| 17 | northstar-dedicated | 107 |
| 18 | ksmbd-tools | 64 |
| 19 | ps4-ftp | 35 |
| 20 | eja | 16 |
| 21 | homenet | 5 |
| 22 | httpserve | 1 |
| 23 | phttpd | 0 |
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