Top 11 C Coroutine Projects

tbox

6 4,690 8.1 C

🎁 A glib-like multi-platform c library
swow

4 1,120 8.3 C

Coroutine-based cross-platform concurrent I/O engine.
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
umka-lang

19 968 8.7 C

Umka: a statically typed embeddable scripting language

Project mention: VDrift: Cross-Platform Driving Simulation | news.ycombinator.com | 2023-12-28

zpl

3 960 6.8 C

📐 Pushing the boundaries of simplicity
felix

2 793 7.7 C

The Felix Programming Language (by felix-lang)

Project mention: Felix: Statically typed, performant scripting language with native C++ embedding | news.ycombinator.com | 2023-12-28

libfiber

1 714 6.7 C

The high performance c/c++ coroutine library for Linux/FreeBSD/MacOS/Windows, supporting select/poll/epoll/kqueue/iouring/iocp/windows GUI (by iqiyi)
minicoro

6 577 4.8 C

Single header stackful cross-platform coroutine library in pure C.

Project mention: How Much Memory Do You Need to Run 1M Concurrent Tasks? | news.ycombinator.com | 2023-05-21

It would be interesting to bench something extremely lightweight (like https://github.com/edubart/minicoro) against these runtimes.
By my back-of-the-napkin math, 1,000,000 coroutines would cost about 64mb + 2mb/core for stacks.. which works out to about 4x less memory than the 'winner' of this comparison, and ~30x less than go.

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
Tina

1 250 6.5 C

Tina is a teeny tiny, header only, coroutine and job library.
Bunki

5 223 6.8 C

A simple C coroutine library.

Project mention: Coroutines in C | news.ycombinator.com | 2024-02-25

I honestly like stackful coroutines if you don’t mind allocating memory for a stack.
https://github.com/Keith-Cancel/Bunki

QuarkTS

1 177 5.1 C

An open-source OS for embedded applications that supports prioritized cooperative scheduling, time control, inter-task communications primitives, hierarchical state machines and CoRoutines.
lua-resty-ffi

3 81 5.8 C

lua-resty-ffi provides an efficient and generic API to do hybrid programming in openresty/envoy with mainstream languages (Go, Python, Java, Rust, Nodejs, etc.).

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).