tidwall/neco

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1371 stars · 112 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Neco is a small, fast C library providing concurrency via stackful coroutines with channels, mutexes, condition variables, and deadline/cancellation support. It ships as a single-file amalgamation with no dependencies and is designed for easy concurrent I/O and network programming in C.

Use cases

• write concurrent network code in C without threads
• coroutines for C programs
• use channels and mutexes in C like Go
• concurrent file and socket I/O in C
• lightweight single-threaded concurrency runtime
• cancel long-running I/O with deadlines in C

When to choose

• you need Go-like concurrency primitives in plain C
• you want a dependency-free single-file library
• your workload is I/O-bound and single-threaded
• you need Posix-friendly file-descriptor-based concurrency

When to avoid

• you need a multi-core, multithreaded scheduler
• you prefer async/await or event-loop callback models
• you need first-class Windows support without limitations

Facets

library · maturity active

concurrency networking http-server file-system developer-tools networking operating-systems cpp c wasm cross-platform coroutines stackful-coroutines channels single-threaded-concurrency posix scheduler amalgamation no-dependencies linux macos

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