Dev tools · alternatives · 2026
24 alternatives to StringZilla v3 with C++, Rust, and Swift bindings, and AVX-512 and NEON
Hi HN! I've spent the last few weeks optimizing the string operations in StringZilla. You'd be surprised how much performance GLibc and the Standard Templates Library of C++ are leaving on the table, especially on Arm and, likely, on RISC-V. I've significantly increased the number of implemented algorithms for different workloads. Searching across English texts on Arm, for example: - is 4.4x faster than STL, - and 16.8x faster in reverse order. The new version of the library now includes a C++ binding largely compatible with the C++ Standard, featuring all 17 overloads of the `replace`…
StringZilla is a string manipulation library that provides optimized implementations for C++, Rust, and Swift. It uses AVX-512 and NEON instructions to accelerate common operations like searching, sorting, and… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. StringZilla v3 with C++, Rust, and Swift bindings, and AVX-512 and NEON launched in 2024; newer entries below may have overtaken it.
- 1
A fast and memory-optimized string library for C++ - btwael/SuperString
2018 · github.com · its alternatives →
- 2
An ultra-fast model for real-time coding in Codex
Feb 2026 · openai.com · its alternatives →
- 3
Rapid fuzzy string matching in Python using various string metrics - rapidfuzz/RapidFuzz
2020 · github.com · its alternatives →
- 4
Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod
2014 · github.com · its alternatives →
- 5
Faster user-land reimplementations for several common builtin native JavaScript functions. - codemix/fast.js
2014 · github.com · its alternatives →
- 6
I've built many interpreters over the years, and Bolt represents my attempt at building the scripting language I always wanted. This is the first public release, 0.1.0! I've felt like most embedded languages have been moving towards safety and typing over years, with things like Python type hints, the explosive popularity of typescript, and even typing in Luau, which powers one of the largest scripted evironments in the world. Bolt attempts to harness this directly in the lagnauge rather than as a preprocessing step, and reap benefits in terms of both safety and performance. I intend to be…
2025 · github.com · its alternatives →
- 7
`cronexpr` is a library to parse and drive the crontab expression.
2024 · docs.rs · its alternatives →
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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 →
- 9
Here's a project I've been working on for a little while now. Ripl is a JS library that provides a unified API for rendering shapes on both canvas and SVG interchangeably. Over the years I've used D3 extensively to create data visualisations so I figured I'd have a go at making my own version with a slightly more modern API and stricter TypeScript support. I am aware there are already libraries that can draw to multiple contexts interchangeably, but I've added a few little niceties to Ripl that (as far as I know) some other libraries don't have such as CSS-like query selectors, DOM-like…
2024 · github.com · its alternatives →
- 10
I want to share a really dumb, but very practical project I have packaged this summer, to perform operations on strings much faster. I was using Python to work with a multi-terabyte newline-delimited file. Reading, splitting, and shuffling it was a nightmare. So, I wrapped a trivial hardware-friendly heuristic I've been using for the last few years into a CPython library. The part I enjoyed the most is implementing SIMD behavior without SIMD instructions... Using 64-bit words to work at 8-bit granularity. Unlike conventional SIMD, the code would remain the same for ~~almost~~ any hardware.…
2023 · ashvardanian.com · its alternatives →
- 11
Hi HN! Korean high school senior here, about to start CS in college. I built a browser engine from scratch in C++ to understand how browsers work. First time using C++, 8 weeks of development, lots of debugging—but it works! Features: - HTML parsing with error correction - CSS cascade and inheritance - Block/inline layout engine - Async image loading + caching - Link navigation + history Hardest parts: - String parsing(html, css) - Rendering - Image Caching & Layout Reflowing What I learned (beyond code): - Systematic debugging is crucial - Ship with known bugs rather than chase…
Jan 2026 · github.com · its alternatives →
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A C++ HTML template engine that uses compile time HTML parsing - rep-movsd/see-phit
2017 · github.com · its alternatives →
- 13AS
Took a stab at building my own string diffing JS package. I built an interactive demo for TypeIt’s website (https://typeitjs.com/build-your-own) a while back. The approach I took to handle user input necessitated a way to calculate the difference between the versions of a user’s text input. I searched around for a package to help me out and found a couple of good ones (like fast-diff), but I either didn’t really like their API or didn’t want to take on a huge new dependency. Instead, I thought I’d give it a shot myself (famous last words). I dove into it having no real formal…
2022 · its alternatives →
- 14
Go library that provides fuzzy string matching optimized for filenames and code symbols in the style of Sublime Text, VSCode, IntelliJ IDEA et al. - sahilm/fuzzy
2018 · github.com · its alternatives →
- 15
GitHub Gist: instantly share code, notes, and snippets.
2023 · gist.github.com · its alternatives →
- 16
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 →
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C++ String Toolkit Library (StrTk)
2018 · partow.net · its alternatives →
- 18
The fastest RVA23 RISC-V sandbox. Contribute to libriscv/libriscv development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 19
- 20AF
Serialization framework with some interesting numbers: 10-20x faster on nested objects than json/protobuf. Technical approach: compile-time codegen (no reflection), compact binary protocol with meta-packing, little-endian layout optimized for modern CPUs. Unique features that other fast serializers don't have: - Cross-language without IDL files (Rust ↔ Python/Java/Go) - Trait object serialization (Box) - Automatic circular reference handling - Schema evolution without coordination Happy to discuss design trade-offs. Benchmarks:…
Oct 2025 · fory.apache.org · its alternatives →
- 21
A very fast library for validating UTF-8 using AVX2/SSE4 instructions - zwegner/faster-utf8-validator
2019 · github.com · its alternatives →
- 22
I've created cppmatch, a lightweight, header-only C++ library that brings Rust-inspired pattern matching and error handling to C++. It tries to imitate the functionality of the questionmark (?) operator in C++ by using a macro that uses the gcc extension https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html This allows to create exceptionless code with non-intrusive error-as-value that unlike Exceptions, makes it clear which kinds of error a function can generate and forces you to handle (or ignore) them. The ? operator translates to *expect* To handle the errors I…
2025 · github.com · its alternatives →
- 23
I make a no-CGO Go SQLite driver, by compiling the amalgamation to Wasm, then loading the result with wazero (a CGO-free Wasm runtime). To compile SQLite, I use wasi-sdk, which uses wasi-libc, which is based on musl. It's been said that musl is slow(er than glibc), which is true, to a point. musl uses SWAR on a size_t to implement various functions in string.h. This is fine, except size_t is just 32-bit on Wasm. I found that implementing a few of those functions with Wasm SIMD128 can make them go around 4x faster. Other functions don't even use SWAR; redoing those can make them 16x faster.…
2025 · github.com · its alternatives →
- 24
I've just released gosax, a new Go library for high-performance SAX (Simple API for XML) parsing. It's designed for efficient, memory-conscious XML processing, drawing inspiration from quick-xml and pkg/json. https://github.com/orisano/gosax Key features: - Read-only SAX parsing - Highly efficient parsing using techniques inspired by quick-xml and pkg/json - SWAR (SIMD Within A Register) optimizations for fast text processing gosax is particularly useful for processing large XML files or streams without loading the entire document into memory. It's well-suited…
2024 · github.com · its alternatives →
Also compare
- SuperString – A fast and memory-optimized string library for C++ alternatives
- GPT‑5.3‑Codex‑Spark alternatives
- RapidFuzz – A fast string matching library for Python alternatives
- A Fast, Malloc-Free C++14 Json Parser and Encoder alternatives
- Fast.js – faster reimplementations of native JavaScript functions alternatives
- Bolt – A super-fast, statically-typed scripting language written in C 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 →