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.
+470 stars
from 8,805 · score 6.15
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
30 repositories by Attention Score · Oct 4, 2026 – Nov 2, 2026 (UTC)
2.RyanCodrai / turbovec
A vector index built on TurboQuant, written in Rust with Python bindings
+222 stars
from 17,229 · score 5.41
3.simdjson / simdjson
Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks
+177 stars
from 24,317 · score 5.18
4.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
+142 stars
from 13,709 · score 4.96
5.Tencent / ncnn
ncnn is a high-performance neural network inference framework optimized for the mobile platform
+126 stars
from 23,891 · score 4.84
6.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 🔍
+51 stars
from 4,317 · score 3.95
7.g-truc / glm
OpenGL Mathematics (GLM)
+49 stars
from 11,238 · score 3.91
8.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.
+46 stars
from 1,852 · score 3.85
9.coregx / coregex
Pure Go production-grade regex engine with SIMD optimizations. Up to 3-3000x+ faster than stdlib.
+42 stars
from 261 · score 3.76
10.bytedance / sonic
A blazingly fast JSON serializing & deserializing library
+41 stars
from 9,605 · score 3.74
11.simd-everywhere / simde
Implementations of SIMD instruction sets for systems which don't natively support them.
+27 stars
from 3,114 · score 3.33
12.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.
+25 stars
from 1,985 · score 3.26
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
+22 stars
from 2,119 · score 3.14
14.kolemannix / ffc.h
Single-header c99 accelerated float/double parsing. Port of the fast_float library.
+15 stars
from 209 · score 2.77
15.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 🦖
+14 stars
from 3,565 · score 2.71
16.microsoft / DirectXMath
DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps
+14 stars
from 1,803 · score 2.71
17.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 📐
+12 stars
from 1,893 · score 2.56
18.VectorCamp / vectorscan
A portable fork of the high-performance regular expression matching library
+12 stars
from 765 · score 2.56
19.dotpas / dext
Dext - Modern Full Stack Framework for Delphi
+11 stars
from 318 · score 2.48
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.
+7 stars
from 1,475 · score 2.08
21.liquidaty / zsv
zsv+lib: tabular data swiss-army knife CLI + world's fastest (simd) CSV parser
+6 stars
from 409 · score 1.95
22.VcDevel / Vc
SIMD Vector Classes for C++
+5 stars
from 1,545 · score 1.79
23.VectorDB-NTU / RaBitQ-Library
Official library for RaBitQ vector quantization and approximate nearest-neighbor search, in C++ and Python.
+5 stars
from 287 · score 1.79
24.ermig1979 / Simd
C++ image processing and machine learning library with using of SIMD: SSE, AVX, AVX-512, AMX for x86/x64, NEON, SVE for ARM, HVX for Hexagon
+4 stars
from 2,271 · score 1.61
25.ebassi / graphene
A thin layer of graphic data types
+3 stars
from 439 · score 1.39
26.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.
+2 stars
from 389 · score 1.10
27.unum-cloud / UCall
Web Serving and Remote Procedure Calls at 50x lower latency and 70x higher bandwidth than FastAPI, implementing JSON-RPC & REST over io_uring ☎️
+1 stars
from 1,335 · score 0.69
28.romeric / Fastor
A lightweight high performance tensor algebra framework for modern C++
+1 stars
from 843 · score 0.69
29.kimwalisch / libpopcnt
🚀 Fast C/C++ bit population count library
+1 stars
from 370 · score 0.69
30.coregx / ahocorasick
High-performance Aho-Corasick multi-pattern string matching for Go
+1 stars
from 31 · score 0.69