Dev tools · alternatives · 2026

24 alternatives to Using SIMD to decode and encode gigabytes of varints per second in Rust

Decoding and encoding gigabytes of LEB128 variable-length integers per second in Rust with SIMD - as-com/varint-simd

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Using SIMD to decode and encode gigabytes of varints per second in Rust launched in 2021; newer entries below may have overtaken it.

1
SIMD Viterbi Decoder in Rust▲64
I wrote libcorrect in C in 2016 and wanted to revisit it in Rust. Instead of doing just a direct conversion, I went down the rabbit hole of making Rust's std::simd work for me. I ended up with a templated, generic Viterbi decoder for convolutional codes that dispatches the decode at runtime depending on which instruction sets are available. For small rates and orders, the entire decode lives in registers. Larger codes work through memory but take advantage of some acceleration structures. I also spent some time building a tool to find optimal (max d_free) conv codes for a given rate and…
Aug 2026 · github.com · its alternatives →
2
High-speed UTF-8 validation in Rust▲127
SIMD-accelerated UTF-8 validation for Rust. Contribute to rusticstuff/simdutf8 development by creating an account on GitHub.
2021 · github.com · its alternatives →
3
A SIMD-accelerated noise library in Rust▲73
SIMD noise library for Rust. Contribute to verpeteren/rust-simd-noise development by creating an account on GitHub.
2018 · github.com · its alternatives →
4AF
Apache Fory Rust – 10-20x faster serialization than JSON/Protobuf▲67
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 →
5
TurboRLE – Turbo Run Length Encoding using SIMD▲23
TurboRLE-Fastest Run Length Encoding. Contribute to powturbo/Turbo-Run-Length-Encoding development by creating an account on GitHub.
2015 · github.com · its alternatives →
6
DivANS – Rust simd compression algorithm demo in WASM in the browser▲36
2018 · dropbox.github.io · its alternatives →
7
I'm making a dynamic language in Rust▲184
An implementation of a dynamic programming language in Rust. Includes: Parser/Compiler, REPL, Virtual Machine, Bytecode Disassembler This started out as a learning project to teach myself Rust. It has grown into a decently substantial piece of software and I've learned quite a bit in the process! Some neat things: + A garbage collector that can store dynamically sized types without any double-indirection (i.e. I have my own Box implementation with manual alloc/dealloc) + The smart pointer used to reference GCed data is a thin pointer. The ptr metadata needed for DSTs is stored in…
2022 · github.com · its alternatives →
8
Tiny 1k Rust binary on Windows▲99
:crab: 464b rust binary on windows. Contribute to mcountryman/min-sized-rust-windows development by creating an account on GitHub.
2020 · github.com · its alternatives →
9
Beating GCC 12 – 118x Speedup for Jensen Shannon D. Via AVX-512FP16▲8
SIMD-accelerated distances, dot products, matrix ops, geospatial & geometric kernels for 16 numeric types — from 6-bit floats to 64-bit complex — across x86, Arm, RISC-V, and WASM, with bindings for Python, Rust, C, C++, Swift, JS, and Go 📐 - Release Beating GCC 12 - 118x Speedup for Jensen Shannon
2023 · github.com · its alternatives →
10
Faking SIMD to Search and Sort Strings 5x Faster▲29
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
TurboQuant for vector search – 2-4 bit compression▲89
A vector index built on TurboQuant, written in Rust with Python bindings - RyanCodrai/turbovec
Mar 2026 · github.com · its alternatives →
12
Python can make 3M+ WebSocket keys per second▲83
:zap: Optimizing Python code by implementing a C++ extension - szabolcsdombi/optimization-demo
2023 · github.com · its alternatives →
13
Denormalized – Embeddable Stream Processing in Rust and DataFusion▲125
tl;dr we built an embeddable stream processing engine in Rust using apache DataFusion, check us out at https://github.com/probably-nothing-labs/denormalized Hey HN, We’d like to showcase a very early version of our embeddable stream processing engine called Denormalized. The rise of DuckDB has abundantly made it clear that even for many workloads of Terabyte scale, a single node system outshines the distributed query engines of previous generation such as Spark, Snowflake etc in terms of both performance and cost. Now a lot of workloads DuckDB is used for were normally…
2024 · github.com · its alternatives →
14
LeVarInt64 for Rust▲5
A library for encoding (and decoding) u64s into usually fewer than eight bytes.
2023 · crates.io · its alternatives →
15
Rust macro utility for batching expensive async operations▲28
rust macro util for batching expensive operations. Contribute to hackermondev/batched development by creating an account on GitHub.
2025 · github.com · its alternatives →
16PA
Python at the Speed of Rust▲68
I’m sure many of you are familiar, but there’s a treacherous gap between finding (or building) a model that works in PyTorch, and getting that deployed into your application, especially in consumer-facing applications. I’ve been very interested in solving this problem with a great developer experience. Over time, I gradually realized that the highest-impact thing to have was a way to go from existing Python code to a self-contained native binary—in other words, a Python compiler. I was already pretty familiar with a successful attempt: when Apple introduced armv8 on the iPhone 5s, they…
2025 · blog.fxn.ai · its alternatives →
17
18KB ls alternative in no_std rust and Libc▲23
crates.io serves as a central registry for sharing crates, which are packages or libraries written in Rust that you can use to enhance your projects
Jul 2026 · crates.io · its alternatives →
18
Cute tricks for SIMD vectorized binary encoding of nucleotides in Rust▲5
Cute tricks for SIMD vectorized binary encoding and decoding of nucleotides, in Rust. - Daniel-Liu-c0deb0t/cute-nucleotides
2020 · github.com · its alternatives →
19
I built a CSV parser to try Go 1.26's new SIMD package▲8
Hey HN, A CSV parser using Go 1.26's experimental simd/archsimd package. I wanted to see what the new SIMD API looks like in practice. CSV parsing is mostly "find these bytes in a buffer"—load 64 bytes, compare, get a bitmask of positions. The interesting part was handling chunk boundaries correctly (quotes and line endings can split across chunks). - Drop-in replacement for encoding/csv - ~20% faster for unquoted data on AVX-512 - Quoted data is slower (still optimizing) - Scalar fallback for non-AVX-512 Requires GOEXPERIMENT=simd.…
Jan 2026 · github.com · its alternatives →
20
Mmdr – 1000x faster Mermaid rendering in pure Rust (no browser)▲47
I was building a Rust-based agentic coding TUI and needed to render Mermaid diagrams. Noticed the official mermaid-cli spawns a full browser instance (Puppeteer/Chrome) just to render diagrams. Decided to fix this. mmdr is a native Rust renderer. No browser, no Node.js. mermaid-cli: ~3000ms per diagram mmdr: ~3ms per diagram Supports 13 diagram types: flowchart, sequence, class, state, ER, pie, gantt, timeline, journey, mindmap, git graph, XY chart, and quadrant.
Feb 2026 · github.com · its alternatives →
21
toktrack▲68
Did you know Claude Code deletes your session data after 30 days? I found out the hard way when I tried to check my spending history. My session files hit 3GB (2000+ files) and existing tools took 40+ seconds. Rewrote it in Rust with simd-json + rayon. - First run: ~1s (vs 40s+) - Daily use: ~0.04s (1000x faster, cached) - TUI dashboard with daily/weekly/monthly breakdown - Supports Claude Code, Codex CLI, Gemini CLI - Persistent cache — history survives even after CLI deletes files GitHub: https://github.com/mag123c/toktrack Feedback welcome!
Feb 2026 · github.com · its alternatives →
22
Glicol - A Graph-Oriented Live Coding Language/DSP Lib Written in Rust▲58
Graph-oriented live coding language and music/audio DSP library written in Rust - chaosprint/glicol
2022 · github.com · its alternatives →
23
Outperforming VByte for Large Integers Using Phi-Encoding▲15
Properties of a Novel Binary Representation of Integers using Base-𝜙 - irradix/paper.md at main · DOSAYGO-STUDIO/irradix
2024 · github.com · its alternatives →
24
Rust-chunked-transfer – Encoder/decoder for HTTP chunked transfers▲6
Encoder and decoder for HTTP chunked transfer coding (RFC 7230 § 4.1) - frewsxcv/rust-chunked-transfer
2015 · github.com · its alternatives →

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