1.FareedKhan-dev / kimi-k3-in-c
A 2.78-trillion-parameter Kimi K3 running inference on a single CPU in 8.24 GB of RAM. Portable C99: no BLAS, no framework, no GPU.
+89 stars
from 9,186 · score 4.50
Trending repositories
Ranked by Attention Score: stars gained over the last 7 complete days
26 repositories by Attention Score · Oct 27, 2026 – Nov 2, 2026 (UTC)
2.ybouane / flashraw
Fast, memory-safe camera RAW decoder in Rust: ~40 formats, SIMD, GPU, WebAssembly, ICC colour management. CLI, C, C++, Python and JavaScript bindings.
+75 stars
from 40 · score 4.33
3.openwall / john
John the Ripper jumbo - advanced offline password cracker, which supports hundreds of hash and cipher types, and runs on many operating systems, CPUs, GPUs, and even some FPGAs
+34 stars
from 13,817 · score 3.56
4.simdjson / simdjson
Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks
+33 stars
from 24,461 · score 3.53
5.RyanCodrai / turbovec
A vector index built on TurboQuant, written in Rust with Python bindings
+27 stars
from 17,424 · score 3.33
6.Tencent / ncnn
ncnn is a high-performance neural network inference framework optimized for the mobile platform
+20 stars
from 23,997 · score 3.04
7.unum-cloud / USearch
Fast Open-Source Search & Clustering engine × for Vectors & Arbitrary Objects × in C++, C, Python, JavaScript, Rust, Java, Objective-C, Swift, C#, GoLang, and Wolfram 🔍
+14 stars
from 4,354 · score 2.71
8.g-truc / glm
OpenGL Mathematics (GLM)
+13 stars
from 11,274 · score 2.64
9.coregx / coregex
Pure Go production-grade regex engine with SIMD optimizations. Up to 3-3000x+ faster than stdlib.
+11 stars
from 292 · score 2.48
10.bytedance / sonic
A blazingly fast JSON serializing & deserializing library
+10 stars
from 9,636 · score 2.40
11.simdutf / simdutf
Unicode routines (UTF8, UTF16, UTF32) and Base64: billions of characters per second using SSE2, AVX2, NEON, AVX-512, RISC-V Vector Extension, LoongArch64, POWER. Part of Node.js, WebKit/Safari, Ladybird, Chromium, Cloudflare Workers, Ghostty and Bun.
+7 stars
from 2,003 · score 2.08
12.ashvardanian / NumKong
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 📐
+7 stars
from 1,898 · score 2.08
13.fastfloat / fast_float
Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, DuckDB, Chromium, Redis and WebKit/Safari
+6 stars
from 2,135 · score 1.95
14.ada-url / ada
WHATWG-compliant and fast URL parser written in modern C++, part of Internet Archive, Node.js, Clickhouse, Redpanda, Kong, Telegram, Adguard, Datadog and Cloudflare Workers.
+6 stars
from 1,892 · score 1.95
15.simd-everywhere / simde
Implementations of SIMD instruction sets for systems which don't natively support them.
+5 stars
from 3,136 · score 1.79
16.VectorCamp / vectorscan
A portable fork of the high-performance regular expression matching library
+5 stars
from 772 · score 1.79
17.kolemannix / ffc.h
Single-header c99 accelerated float/double parsing. Port of the fast_float library.
+4 stars
from 220 · score 1.61
18.ashvardanian / StringZilla
Up to 100x faster strings for C, C++, CUDA, Python, Rust, Swift, JS, & Go, leveraging NEON, AVX2, AVX-512, SVE, GPGPU, & SWAR to accelerate search, hashing, sorting, edit distances, sketches, and memory ops 🦖
+3 stars
from 3,576 · score 1.39
19.microsoft / DirectXMath
DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps
+3 stars
from 1,814 · score 1.39
20.nietras / Sep
One of the World's Fastest .NET CSV Parsers. Modern, minimal, fast, zero allocation, reading and writing of separated values (`csv`, `tsv` etc.). Cross-platform, trimmable and AOT/NativeAOT compatible with blazing fast SIMD vectorized parsing.
+3 stars
from 1,479 · score 1.39
21.VcDevel / Vc
SIMD Vector Classes for C++
+2 stars
from 1,548 · score 1.10
22.romeric / Fastor
A lightweight high performance tensor algebra framework for modern C++
+1 stars
from 843 · score 0.69
23.ebassi / graphene
A thin layer of graphic data types
+1 stars
from 441 · score 0.69
24.p-ranav / fccf
fccf: A command-line tool that quickly searches through C/C++ source code in a directory based on a search string and prints relevant code snippets that match the query.
+1 stars
from 390 · score 0.69
25.dotpas / dext
Dext - Modern Full Stack Framework for Delphi
+1 stars
from 328 · score 0.69
26.VectorDB-NTU / RaBitQ-Library
Official library for RaBitQ vector quantization and approximate nearest-neighbor search, in C++ and Python.
+1 stars
from 291 · score 0.69