1.aria2 / aria2
aria2 is a lightweight multi-protocol & multi-source, cross platform download utility operated in command-line. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.
+503 stars
from 42,869 · score 6.22
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
44 repositories by Attention Score · Oct 4, 2026 – Nov 2, 2026 (UTC)
2.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
+129 stars
from 43,451 · score 4.87
4.gabime / spdlog
Fast C++ logging library.
+123 stars
from 29,604 · score 4.82
5.federico-busato / Modern-CPP-Programming
Modern C++ Programming Course (C++03/11/14/17/20/23/26)
+101 stars
from 16,169 · score 4.62
6.changkun / modern-cpp-tutorial
📚 Modern C++ Tutorial: C++11 to C++26 On the Fly | https://changkun.de/modern-cpp/
+98 stars
from 25,838 · score 4.60
7.yhirose / cpp-httplib
A C++ header-only HTTP/HTTPS server and client library
+89 stars
from 16,865 · score 4.50
8.AnthonyCalandra / modern-cpp-features
A cheatsheet of modern C++ language and library features.
+57 stars
from 21,876 · score 4.06
9.andreasfertig / cppinsights
C++ Insights - See your source code with the eyes of a compiler
+57 stars
from 4,630 · score 4.06
10.CLIUtils / CLI11
CLI11 is a command line parser for C++11 and beyond that provides a rich feature set with a simple and intuitive interface.
+47 stars
from 4,465 · score 3.87
11.rigtorp / awesome-modern-cpp
A collection of resources on modern C++
+28 stars
from 13,158 · score 3.37
12.doctest / doctest
The fastest feature-rich C++11/14/17/20/23 single-header testing framework
+22 stars
from 6,880 · score 3.14
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.nCine / nCine
A cross-platform 2D game engine
+12 stars
from 1,333 · score 2.56
15.bloomberg / bde
Basic Development Environment - a set of foundational C++ libraries used at Bloomberg.
+10 stars
from 1,844 · score 2.40
16.martinus / nanobench
Simple, fast, accurate single-header microbenchmarking functionality for C++11/14/17/20
+10 stars
from 1,740 · score 2.40
17.Alinshans / MyTinySTL
Achieve a tiny STL in C++11
+8 stars
from 12,460 · score 2.20
18.taocpp / PEGTL
Parsing Expression Grammar Template Library
+7 stars
from 2,163 · score 2.08
19.p-ranav / tabulate
Table Maker for Modern C++
+6 stars
from 2,173 · score 1.95
20.Taywee / args
A header-only C++ argument parser library. Supposed to be flexible and powerful, and attempts to be compatible with the functionality of the Python standard argparse library (though not necessarily the API).
+6 stars
from 1,640 · score 1.95
21.p-ranav / awesome-hpp
A curated list of awesome header-only C++ libraries
+5 stars
from 4,179 · score 1.79
22.p-ranav / indicators
Activity Indicators for Modern C++
+5 stars
from 3,416 · score 1.79
23.vimpunk / mio
Cross-platform C++11 header-only library for memory mapped file IO
+5 stars
from 1,956 · score 1.79
24.VcDevel / Vc
SIMD Vector Classes for C++
+5 stars
from 1,545 · score 1.79
25.biojppm / rapidyaml
Rapid YAML - a library to parse and emit YAML, and do it fast.
+5 stars
from 757 · score 1.79
26.softwareQinc / qpp
Modern C++ quantum computing library
+5 stars
from 673 · score 1.79
27.Qihoo360 / evpp
A modern C++ network library for developing high performance network services in TCP/UDP/HTTP protocols.
+4 stars
from 3,771 · score 1.61
28.dev-cafe / cmake-cookbook
CMake Cookbook recipes.
+4 stars
from 2,844 · score 1.61
29.adishavit / argh
Argh! A minimalist argument handler.
+3 stars
from 1,441 · score 1.39
30.fraillt / bitsery
Your binary serialization library
+3 stars
from 1,266 · score 1.39
31.mpark / variant
C++17 `std::variant` for C++11/14/17
+3 stars
from 714 · score 1.39
32.sony / nmos-cpp
An NMOS (Networked Media Open Specifications) Registry and Node in C++ (IS-04, IS-05)
+3 stars
from 196 · score 1.39
33.martinus / robin-hood-hashingArchived
Fast & memory efficient hashtable based on robin hood hashing for C++11/14/17/20
+2 stars
from 1,618 · score 1.10
34.muellan / clipp
easy to use, powerful & expressive command line argument parsing for modern C++ / single header / usage & doc generation
+2 stars
from 1,323 · score 1.10
35.kthohr / stats
A C++ header-only library of statistical distribution functions.
+2 stars
from 557 · score 1.10
36.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
37.slavenf / sfl-library
C++11/20 library that provides static_vector, small_vector, static_map, small_map, flat_map, static_flat_map, small_flat_map, static_unordered_map, small_unordered_map, etc.
+2 stars
from 163 · score 1.10
38.microsoft / cpprestsdkArchived
The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services.
+1 stars
from 8,246 · score 0.69
39.CppCon / CppCon2020
Slides and other materials from CppCon 2020
+1 stars
from 1,617 · score 0.69
40.renatoGarcia / icecream-cpp
🍦 Never use cout/printf to debug again
+1 stars
from 749 · score 0.69
41.cbeck88 / visit_struct
A miniature library for struct-field reflection in C++
+1 stars
from 655 · score 0.69
42.arun11299 / cpp-jwt
JSON Web Token library for C++
+1 stars
from 441 · score 0.69
43.CBICA / CaPTk
Cancer Imaging Phenomics Toolkit (CaPTk) is a software platform to perform image analysis and predictive modeling tasks. Documentation: https://cbica.github.io/CaPTk
+1 stars
from 197 · score 0.69
44.fktn-k / fkYAML
A C++ header-only YAML library
+1 stars
from 153 · score 0.69