Dev tools · alternatives · 2026

24 alternatives to PolymurHash, a fast hash with a mathematically proven collision rate

The PolymurHash universal hash function. Contribute to orlp/polymur-hash development by creating an account on GitHub.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. PolymurHash, a fast hash with a mathematically proven collision rate launched in 2023; newer entries below may have overtaken it.

1. 1
   Neural-hash-collider – Find target hash collisions for NeuralHash▲623

   Preimage attack against NeuralHash 💣. Contribute to anishathalye/neural-hash-collider development by creating an account on GitHub.

   2021 · github.com · its alternatives →

2. 2TT
   Tifuhash - Tiny Fast Universal Hash, using 64-bit continued fractions▲42

   2017 · npmjs.com · its alternatives →

3. 3
   Discohash – Fast Hash▲75

   :rocket: DISCoHAsH - Simple, fast, quality hash in 120 lines. 10GB/s serial (depending on hardware). Also in NodeJS - DO-SAY-GO/DISCoHAsH

   2020 · github.com · its alternatives →

4. 4
   Beamsplitter – a new possibly universal hash▲69

   :gem: Beamsplitter - A new (possibly universal) hash that passes SMHasher. Built mainly with a random 10x64 S-box. Also in NodeJS - DO-SAY-GO/beamsplitter

   2020 · github.com · its alternatives →

5. 55N
   59a34eabe31910abfb06f308 – NeuralHash Collision Demo▲339

   2021 · thishashcollisionisnotporn.com · its alternatives →

6. 6
   A hash array-mapped trie implementation in C▲171

   Long-simmering side project that is finally ready to see the light. HAMTs are a cool persistent data structure and implementing one has been a lot of fun. Beyond the code, there is likely some value in the extensive and largely complete implementation docs; basic benchmarks are linked in the README, too. Kind of aiming to be "the libavl for HAMTs". That is obviously a high and aspirational bar but a distinct possibility if it stirs up a little interest and/or contribution. Anyways, it's time for this to go out, collect feedback and maybe even some use outside of toy projects. Let me…

   2023 · github.com · its alternatives →

7. 7
   Array with Constant Time Access and Fast Insertion and Deletion▲300

   Contribute to igushev/IgushArray development by creating an account on GitHub.

   2019 · github.com · its alternatives →

8. 8
   Hashbase▲71

   Hosting for the peer-to-peer Web.

   2018 · hashbase.io · its alternatives →

9. 9
   FasterGH▲260

   Fast GitHub browsing experience

   Mar 2026 · fastergh.com · its alternatives →

10. 10
    Monomorph – pack any shellcode into a binary with a fixed MD5 hash▲28

    MD5-Monomorphic Shellcode Packer - all payloads have the same MD5 hash - DavidBuchanan314/monomorph

    2022 · github.com · its alternatives →

11. 11
    HASH▲127

    Build complex simulations quickly with modular components

    2020 · hash.ai · its alternatives →

12. 12AS
    Accelerating SHA256 by 100x in Golang on ARM▲156

    2016 · blog.minio.io · its alternatives →

13. 13
    HyperLogLog intersections▲88

    HyperMinHash: Bringing intersections to HyperLogLog - axiomhq/hyperminhash

    2018 · github.com · its alternatives →

14. 14
    Rain hashes – well designed, simple and fast variable sized hashes▲79

    The fastest 128-bit and 256-bit hash, passes all tests, and under 140 source lines of code. API library and CLI tool in C++ and NodeJS/Wasm - DOSAYGO-STUDIO/rain

    2024 · github.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
    An improved version of HyperLogLog▲194

    HyperLogLog with lots of sugar (Sparse, LogLog-Beta bias correction and TailCut space reduction) brought to you by Axiom - axiomhq/hyperloglog

    2017 · github.com · its alternatives →

17. 17FH
    Funny, Human-Memorable SHA-256 Fingerprints▲42

    2020 · madhash.telekinesis.cloud · its alternatives →

18. 18
    Generating Collisions on NeuralHash▲22

    Proof of Concept : generating collisions on a neural perceptual hash - collisionLSH.py

    2021 · gist.github.com · its alternatives →

19. 19AS
    A Simple GPU Hash Table▲119

    A Simple GPU Hash Table

    2020 · nosferalatu.com · its alternatives →

20. 20
    Ham, a fast PHP router/microframework I hacked up last night▲87

    PHP Microframework. Contribute to radiosilence/Ham development by creating an account on GitHub.

    2012 · github.com · its alternatives →

21. 21
    Cuq – Formal Verification of Rust GPU Kernels▲94

    A pipeline that translates Rust GPU code into formal Coq models, as a foundation for memory model proofs - neelsomani/vericuda

    2025 · github.com · its alternatives →

22. 22
    SplatHash – A lightweight alternative to BlurHash and ThumbHash▲61

    Hi HN, I built SplatHash. It's a lightweight image placeholder generator I wrote to be a simpler, faster alternative to BlurHash and ThumbHash. Repo: https://github.com/junevm/splathash

    Feb 2026 · github.com · its alternatives →

23. 23
    Jump consistent hash in Go▲20

    :zap: Fast, minimal memory, consistent hash algorithm - lithammer/go-jump-consistent-hash

    2015 · github.com · its alternatives →

24. 24
    Simple Hash Table Implementation for C▲42

    Simple hash table implementation for C. Contribute to watmough/jwHash development by creating an account on GitHub.

    2015 · github.com · 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 →