Life & fun · alternatives · 2026

24 alternatives to Simple Lock-Free Queue in C

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Simple Lock-Free Queue in C launched in 2015; newer entries below may have overtaken it.

1. 1
   A Lock- and wait-free hashtable (and an array too), written in C▲24

   📶 A lock- and wait-free hashtable (and an array too) - mulle-concurrent/mulle-concurrent

   2016 · github.com · its alternatives →

2. 2
   Queuebrick▲101

   The Letterboxd Alternative.

   Sep 2026 · queuebrick.com · its alternatives →

3. 3ZA
   ZeroQueue, A low-code queue management system▲6

   2020 · zeroqueue.dev · its alternatives →

4. 4
   A pure C89 implementation of Go channels, with blocking selects▲271

   A pure C (-std=c89) implementation of Go channels, including blocking and non-blocking selects. - GitHub - rochus-keller/CspChan: A pure C (-std=c89) implementation of Go channels, including blocking and non-blocking selects.

   2023 · github.com · its alternatives →

5. 5
   I wrote a minimal memory allocator in C▲137

   A fun toy memory allocator (not thread safe, that's a future TODO). I also wanted to explain how I approached it, so I also wrote a tutorial blog post (~20 minute read) covering the code which you can find the link to in the README.

   Nov 2025 · github.com · its alternatives →

6. 6AA
   An API for scheduling queue messages▲5

   2020 · schedulerapi.com · its alternatives →

7. 7
   Code Podcast 3: Concurrency – Event Loop & Coroutines▲54

   Concurrency in UIKits, browsers and web servers

   2016 · soundcloud.com · its alternatives →

8. 8
   Scar – A programming language for easy concurrency and parallelism▲7

   2025 · scarlang.pages.dev · its alternatives →

9. 9UA
   USched – A command-line scheduler with a “natural” language and an API▲9

   2015 · usched.org · its alternatives →

10. 10
    I made a zero-copy coroutine tracer to find my scheduler's lost wakeups▲49

    A cross-language, zero-copy coroutine observability framework based on the cTP shared-memory protocol, utilizing lock-free ring buffers for ultra-low overhead state tracing. - lixiasky-back/coroTracer

    Mar 2026 · github.com · its alternatives →

11. 11
    Moqueries – Lock-free interface and function mocks for Go▲15

    Lock-free interface and function mocks for Go. Contribute to moqueries/cli development by creating an account on GitHub.

    2022 · github.com · its alternatives →

12. 12
    X – A programming language with switchable memory modes▲5

    Jun 2026 · github.com · its alternatives →

13. 13DL
    Distributed locking and syncing in Go▲7

    2016 · blog.minio.io · its alternatives →

14. 14
    buffertime▲6

    Make Buffer schedules with ease

    2017 · buffertime.herokuapp.com · its alternatives →

15. 15CF
    Conduit for C++: Lazy Sequences Using the Coroutine TS▲7

    2018 · medium.com · its alternatives →

16. 16
    Yet another C SPDY implementation▲5

    2012 · github.com · its alternatives →

17. 17
    A REPL for practising bitwise operations, written in Rust▲5

    2017 · github.com · its alternatives →

18. 18LI
    Locklock.io – Lock-as-a-service, REST API for easy distributed locking▲5

    2019 · locklock.io · its alternatives →

19. 19FA
    Fastrace- a fast, dependency-free traceroute implementation in pure C▲5

    2025 · davidesantangelo.github.io · its alternatives →

20. 20HB
    Heap-Based Quicksort, Visualized▲7

    2014 · quicksort-heap.herokuapp.com · its alternatives →

21. 21
    An Useful MCP Server▲8

    2025 · github.com · its alternatives →

22. 22
    Ruby queueing library built on Amazon SQS for background processing▲7

    2012 · github.com · its alternatives →

23. 23MS
    Minimalistic secure open source paste bin service▲9

    2016 · bin.so · its alternatives →

24. 24RA
    Recursi – a recursive memory/logic puzzle▲5

    2014 · lkozma.net · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →