Life & fun · alternatives · 2026

24 alternatives to Fmpool – Efficient Free-List Memory Pool of Fixed-Size Objects in C99

Free-List Memory Pool of fixed-size objects in C99 - djoldman/fmpool

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Fmpool – Efficient Free-List Memory Pool of Fixed-Size Objects in C99 launched in 2015; newer entries below may have overtaken it.

1. 1
   Shpool, a Lightweight Tmux Alternative▲323

   shpool is a terminal session persistence tool developed internally at google to support remote workflows, which we have open sourced.

   2024 · github.com · its alternatives →

2. 2
   Micro-mitten – Research language with compile-time memory management▲236

   I've been working on implementing the compile-time approach to memory management described in this thesis (https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-908.pdf) for some time now - some of the performance results look promising! (Although some less so...) I think it would be great to see this taken further and built into a more complete functional language.

   2020 · github.com · its alternatives →

3. 3
   Kent Dybvig's Scheme Machine in 400 Lines of C (Heap-Memory Model)▲226

   Heap based scheme machine. GitHub Gist: instantly share code, notes, and snippets.

   2025 · gist.github.com · its alternatives →

4. 4
   ContextPool▲180

   Persistent memory for AI coding agents

   Apr 2026 · contextpool.io · its alternatives →

5. 5
   Mmm – manual memory management for Go▲72

   [Go] mmm - manual memory management library. Contribute to teh-cmc/mmm development by creating an account on GitHub.

   2015 · github.com · its alternatives →

6. 6
   SafePool – Type-safe object pooling for Go▲6

   Frequent memory allocations can be costly in Go. Go's sync.Pool helps with object reuse but isn't type-safe and can introduce bugs. You need type assertions, and it's easy to accidentally return objects twice or forget to return them at all. SafePool provides type safety with Go generics, eliminating the need for type assertions and making pool usage safer and clearer. For objects that need to live across function boundaries, we added PoolManager. It tracks all objects obtained from pools and ensures they're all returned when the manager is cleaned up, preventing leaks across function calls.…

   Dec 2025 · github.com · its alternatives →

7. 7
   A Fast, Malloc-Free C++14 Json Parser and Encoder▲98

   Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod

   2014 · github.com · its alternatives →

8. 8
   StorPool▲68

   Software-defined distributed storage.

   2014 · storpool.com · its alternatives →

9. 9
   Flexible C memory allocation scheme with leak checking▲52

   🔄 Flexible C memory allocation scheme. Contribute to mulle-c/mulle-allocator development by creating an account on GitHub.

   2016 · github.com · its alternatives →

10. 10
    MCP Memory – Fast Agent Memory Using Google's OKF and SQLite FTS5▲70

    An OKF-backed Model Context Protocol (MCP) server delivering persistent long-term memory and SQLite FTS5 search for AI agents. - fellowgeek/mcp-memory

    Aug 2026 · github.com · its alternatives →

11. 11
    A pure reference counting GC in Go▲57

    Contribute to sendilkumarn/gopurerc development by creating an account on GitHub.

    2020 · github.com · its alternatives →

12. 12
    CXXStateTree – A modern C++ library for hierarchical state machines▲48

    Hi HN! I've built [CXXStateTree](https://github.com/ZigRazor/CXXStateTree), a modern C++ header-only library to create hierarchical state machines with clean, intuitive APIs. It supports: - Deeply nested states - Entry/exit handlers - State transitions with guards and actions - Asynchronous transitions with `co_await` (C++20 coroutines) - Optional runtime type identification for flexibility It's ideal for complex control logic, embedded systems, games, robotics, and anywhere you'd use a finite state machine. I’d love feedback, use cases, or contributions from the…

    2025 · github.com · its alternatives →

13. 13
    33% Memory Reduction by Reordering Struct Fields▲19

    Learn Go (Golang) by writing real code in this interactive course. Practice structs, interfaces, errors, concurrency, and idiomatic backend patterns.

    2020 · qvault.io · its alternatives →

14. 14
    A systems language with runtime reflection and no GC▲6

    Hi HN, I’ve been working on an experimental programming language called XXML. The project started from a frustration I kept running into across systems languages: Languages with strong ownership tend to avoid runtime reflection. Languages with rich reflection usually rely on GC or give up memory guarantees. Compile-time code generation often requires a separate macro language. I wanted to explore whether those tradeoffs are truly necessary. What XXML is trying to do XXML is a statically-typed, native language that: Uses explicit ownership and borrowing (no garbage collector) Supports runtime…

    Dec 2025 · xxml-language.com · its alternatives →

15. 15
    A reimplementation of Google's sparsehash in C▲22

    A simple re-implementation of Google's sparsehash as a learning excercise. - qpfiffer/Simple-Sparsehash

    2015 · github.com · its alternatives →

16. 16
    PyExPool – Tiny Multi-Process Execution Pool for Python▲17

    Python Multi-Process Execution Pool: concurrent asynchronous execution pool with custom resource constraints (memory, timeouts, affinity, CPU cores and caching), load balancing and profiling capabilities of the external apps on NUMA architecture - eXascaleInfolab/PyExPool

    2016 · github.com · its alternatives →

17. 17
    A simple library for persistent finite-state machines in Go▲10

    A finite-state machine library for the Go programming language - calebwin/go-sm

    2018 · github.com · its alternatives →

18. 18
    Knitting – A shared-memory concurrency runtime for Node.js,Bun,and Deno▲12

    A zero-dependency concurrency runtime for Node.js, Deno, and Bun. Run typed JavaScript tasks on threads or isolated processes without blocking the main thread.

    10d ago · js.knitting.run · its alternatives →

19. 19
    Brodal-Okasaki heap implementation in Go▲10

    An implementation of Brodal-Okasaki heap using Go. - cngkaygusuz/BrodalOkasakiHeap

    2015 · github.com · its alternatives →

20. 20RM
    Reducing memory allocs in convoy's flatten pkg▲12

    2025 · medium.com · its alternatives →

21. 21
    Slater▲11

    Low-RAM fast graph DB designed for local replica graphs.

    Jul 2026 · github.com · its alternatives →

22. 22LA
    LibRapid -- A high performance multi-dimensional array library▲8

    tl;dr I'm developing an incredibly fast library for arrays and mathematics, and I've implemented a few new features and made some improvements. I'd love for you to check it out! Links: GitHub: https://github.com/LibRapid/librapid/ Documentation: https://librapid.readthedocs.io/en/latest/ Discord: https://discord.com/invite/cGxTFTgCAC Hey everyone! I am the lead developer of LibRapid (https://github.com/LibRapid/librapid/), a high-performance C++ library for array manipulation and mathematics. I've…

    2023 · its alternatives →

23. 23
    I rewrote few of the common core string.h functions▲9

    I rewrote the most common core string.h functions in pure C. I mostly did it to learn pointers and string. Would love to get any feedbacks:)

    2025 · github.com · its alternatives →

24. 24
    memory-keeper▲3

    99.9% DeepSeek cache hit, 3-tier context proxy

    Jun 2026 · haoyun18881-beep.github.io · 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 →