Life & fun · alternatives · 2026

Shishua is a fast pseudo-random number generator released in 2020. It is designed for developers and researchers who need efficient random number generation for computational tasks. The generator prioritizes speed… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Shishua – Fast pseudo-random generator launched in 2020; newer entries below may have overtaken it.

1. 1
   Haikei▲433

   Generate unique SVG design assets in just a few seconds

   2021 · haikei.app · its alternatives →

2. 2
   Fast Random Library for C++17▲52

   Morning HN. Random number generation feels is a somewhat underrepresented topic in the C++ realm. There is a lot of questionable info about it found online and even the standard library is quite behind the times in terms of it's algorithms. It suffers from trying to accommodate sometimes impractical standard requirements and has several ways of getting significantly bad statistical results. This leaves a lot easily achievable performance & quality on the table. So, being a mathematician who mostly works with stochastic models and wants these models to run fast and well, I embarked on a…

   2025 · github.com · its alternatives →

3. 3
   Java Bullshifier▲199

   A command line tool to generate massive random Java applications

   2016 · takipi.github.io · its alternatives →

4. 4
   A tiny and platform-agnostic true random number generator for FPGA/ASIC▲27

   It is based on phase noise, consumes less than 60 LUT4s/FFs and achieves up to 7.99 bits of entropy per byte. Feel free to comment if you have any questions, ideas or thoughts :)

   2023 · github.com · its alternatives →

5. 5
   A Pseudo-Random Number Generator Predictor in Java▲5

   An experimental pseudo-random number generator prediction concept. - yutarochan/PRNGPredict

   2014 · github.com · its alternatives →

6. 6
   LoopMix128 – Fast C PRNG (.46ns), 2^128 Period, BigCrush/PractRand Pass▲76

   LoopMix128 is a fast C PRNG I wrote for non-cryptographic tasks. GitHub (MIT): https://github.com/danielcota/LoopMix128 Highlights: * ~0.37 ns/value (GCC 11.4, -O3 -march=native), 98% faster than xoroshiro128++ and PCG64. * Passes TestU01 BigCrush & PractRand (32TB). * Guaranteed 2^128 period. * Proven injective (192-bit state) via Z3 SMT solver; allows parallel streams. * Core requires only stdint.h. Seeking feedback on design, use cases, or further testing.

   2025 · github.com · its alternatives →

7. 7
   Simple way to obtain pseudorandomness from CPU context switch in Go▲34

   Pseudorandom generator written in Go using CPU context switch - maxamel/BitGenGo

   2018 · github.com · its alternatives →

8. 8
   A weekend replication of STOKE, a stochastic superoptimiser▲58

   Haskell re-implementation of STOKE, the stochastic superoptimizer - blaze/notebooks/tutorial.ipynb at master · bollu/blaze

   2019 · github.com · its alternatives →

9. 9
   Timber – Ollama for classical ML models, 336x faster than Python▲207

   Ollama for classical ML models. AOT compiler that turns XGBoost, LightGBM, scikit-learn, CatBoost & ONNX models into native C99 inference code. One command to load, one command to serve. 336x faster than Python inference. - kossisoroyce/timber

   Mar 2026 · github.com · its alternatives →

10. 10
    Shimmy – 5MB privacy-first, local alternative to Ollama (680MB)▲14

    ⚡ Pure-Rust WebGPU inference engine — OpenAI-API compatible, GGUF native, runs on any GPU. No Python. No llama.cpp. Single binary. - Michael-A-Kuykendall/shimmy

    2025 · github.com · its alternatives →

11. 11VP
    VHDL pseudo random generator tutorial (three parts)▲14

    2016 · fpgasite.net · its alternatives →

12. 12RA
    Random access noise – counter-based pseudo-random number generator▲20

    2022 · joelkp.frama.io · its alternatives →

13. 13AT
    A tiny LLM running at 21,000 tok/s on a $250 FPGA (Live Demo)▲79

    A 3.16M-parameter INT4 transformer running entirely in the on-chip memory of a Xilinx Kria KV260. Zero DRAM in the token loop, 59,965 tok/s on the fabric, bit-exact. Chat with it live.

    Aug 2026 · mikeayles.com · its alternatives →

14. 14
    Fast 2kB date library alternative to Moment.js with the same API▲122

    ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API - iamkun/dayjs

    2018 · github.com · its alternatives →

15. 15
    Tail Recursion Optimization for the JVM▲107

    Optimizer library for tail recursive calls in Java bytecode - Sipkab/jvm-tail-recursion

    2020 · github.com · its alternatives →

16. 16
    Sonyflake – distributed unique ID generator implemented in Rust▲66

    🃏 A distributed unique ID generator inspired by Twitter's Snowflake. - bahlo/sonyflake-rs

    2020 · github.com · its alternatives →

17. 17
    Reducing the size of PCSA to that of HyperLogLog▲45

    Contribute to seiflotfy/pcsa development by creating an account on GitHub.

    2018 · github.com · its alternatives →

18. 18
    Hsrs – Type-Safe Haskell Bindings Generator for Rust▲53

    Hey everyone! I've been working on hsrs, a type-safe Haskell Bindings Generator for Rust. I couldn't really find any bindings generator that would create type-safe, rich bindings for Haskell from Rust. Naturally, both languages have rich type systems, so I was amazed that no awesome bindings generator already existed, hence I decided to write my own. hsrs feels very similar to pyo3 and napi-rs, and if you've used those, hsrs will feel right at home. What's unique about hsrs as opposed to hs-bindgen is that it has type-safe bindings for rich types, like Result, Maybe, etc. while also…

    May 2026 · github.com · its alternatives →

19. 19HP
    High-performance ahead-of-time compiler for Machine Learning▲83

    2018 · scss.tcd.ie · its alternatives →

20. 20
    Random Timer Generator▲68

    Set a minimum and maximum, create a random countdown timer

    2022 · apps.apple.com · its alternatives →

21. 21SA
    Shibuya – A High-Performance WAF in Rust with eBPF and ML Engine▲22

    Hi HN, I’ve been working on Shibuya, a next-generation Web Application Firewall (WAF) built from the ground up in Rust. I wanted to build a WAF that didn't just rely on legacy regex signatures but could understand intent and perform at line-rate using modern kernel features. What makes Shibuya different: Multi-Layer Pipeline: It integrates a high-performance proxy (built on Pingora) with rate limiting, bot detection, and threat intelligence. eBPF Kernel Filtering: For volumetric attacks, Shibuya can drop malicious packets at the kernel level using XDP before they consume userspace resources.…

    Feb 2026 · ghostklan.com · its alternatives →

22. 22
    Random Generator▲72

    Simple and easy to use ad-free number generator

    2021 · play.google.com · its alternatives →

23. 23
    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 →

24. 24
    A Tiny and Platform-Agnostic True Random Number Generator for Any FPGA▲5

    🎲 A Tiny and Platform-Independent True Random Number Generator for any FPGA (and ASIC). - stnolting/neoTRNG

    2021 · 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 →