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.
+1,911 stars
from 41,461 · score 7.56
Trending repositories
Ranked by Attention Score: stars gained over the last 90 complete days
56 repositories by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
2.gabime / spdlog
Fast C++ logging library.
+439 stars
from 29,288 · score 6.09
3.simdjson / simdjson
Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks
+430 stars
from 24,064 · score 6.07
+418 stars
from 43,162 · score 6.04
5.federico-busato / Modern-CPP-Programming
Modern C++ Programming Course (C++03/11/14/17/20/23/26)
+364 stars
from 15,906 · score 5.90
6.yhirose / cpp-httplib
A C++ header-only HTTP/HTTPS server and client library
+314 stars
from 16,640 · score 5.75
7.changkun / modern-cpp-tutorial
📚 Modern C++ Tutorial: C++11 to C++26 On the Fly | https://changkun.de/modern-cpp/
+299 stars
from 25,637 · score 5.70
8.andreasfertig / cppinsights
C++ Insights - See your source code with the eyes of a compiler
+190 stars
from 4,497 · score 5.25
9.AnthonyCalandra / modern-cpp-features
A cheatsheet of modern C++ language and library features.
+162 stars
from 21,771 · score 5.09
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.
+123 stars
from 4,389 · score 4.82
11.rigtorp / awesome-modern-cpp
A collection of resources on modern C++
+115 stars
from 13,071 · score 4.75
12.doctest / doctest
The fastest feature-rich C++11/14/17/20/23 single-header testing framework
+86 stars
from 6,816 · score 4.47
13.Alinshans / MyTinySTL
Achieve a tiny STL in C++11
+68 stars
from 12,400 · score 4.23
14.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
+63 stars
from 2,078 · score 4.16
15.p-ranav / awesome-hpp
A curated list of awesome header-only C++ libraries
+52 stars
from 4,132 · score 3.97
16.martinus / nanobench
Simple, fast, accurate single-header microbenchmarking functionality for C++11/14/17/20
+35 stars
from 1,715 · score 3.58
17.taocpp / PEGTL
Parsing Expression Grammar Template Library
+29 stars
from 2,141 · score 3.40
18.bloomberg / bde
Basic Development Environment - a set of foundational C++ libraries used at Bloomberg.
+23 stars
from 1,831 · score 3.18
19.nCine / nCine
A cross-platform 2D game engine
+23 stars
from 1,322 · score 3.18
20.p-ranav / indicators
Activity Indicators for Modern C++
+20 stars
from 3,401 · score 3.04
21.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).
+19 stars
from 1,627 · score 3.00
22.biojppm / rapidyaml
Rapid YAML - a library to parse and emit YAML, and do it fast.
+15 stars
from 747 · score 2.77
23.fraillt / bitsery
Your binary serialization library
+14 stars
from 1,255 · score 2.71
24.softwareQinc / qpp
Modern C++ quantum computing library
+14 stars
from 664 · score 2.71
25.p-ranav / tabulate
Table Maker for Modern C++
+13 stars
from 2,166 · score 2.64
26.VcDevel / Vc
SIMD Vector Classes for C++
+13 stars
from 1,537 · score 2.64
27.sony / nmos-cpp
An NMOS (Networked Media Open Specifications) Registry and Node in C++ (IS-04, IS-05)
+13 stars
from 186 · score 2.64
28.Qihoo360 / evpp
A modern C++ network library for developing high performance network services in TCP/UDP/HTTP protocols.
+11 stars
from 3,764 · score 2.48
29.vimpunk / mio
Cross-platform C++11 header-only library for memory mapped file IO
+10 stars
from 1,951 · score 2.40
30.dev-cafe / cmake-cookbook
CMake Cookbook recipes.
+9 stars
from 2,839 · score 2.30
31.adishavit / argh
Argh! A minimalist argument handler.
+8 stars
from 1,436 · score 2.20
32.muellan / clipp
easy to use, powerful & expressive command line argument parsing for modern C++ / single header / usage & doc generation
+8 stars
from 1,317 · score 2.20
33.bfgroup / Lyra
A simple to use, composable, command line parser for C++ 11 and beyond
+7 stars
from 598 · score 2.08
34.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.
+7 stars
from 158 · score 2.08
35.mpark / variant
C++17 `std::variant` for C++11/14/17
+6 stars
from 711 · score 1.95
36.NVIDIA / thrustArchived
[ARCHIVED] The C++ parallel algorithms library. See https://github.com/NVIDIA/cccl
+4 stars
from 4,990 · score 1.61
37.martinus / robin-hood-hashingArchived
Fast & memory efficient hashtable based on robin hood hashing for C++11/14/17/20
+4 stars
from 1,616 · score 1.61
38.ldionne / dyno
Runtime polymorphism done right
+4 stars
from 1,041 · score 1.61
39.fktn-k / fkYAML
A C++ header-only YAML library
+4 stars
from 150 · score 1.61
40.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.
+3 stars
from 8,244 · score 1.39
41.NVIDIA / libcudacxxArchived
[ARCHIVED] The C++ Standard Library for your entire system. See https://github.com/NVIDIA/cccl
+3 stars
from 2,297 · score 1.39
42.CppCon / CppCon2020
Slides and other materials from CppCon 2020
+3 stars
from 1,615 · score 1.39
43.renatoGarcia / icecream-cpp
🍦 Never use cout/printf to debug again
+3 stars
from 747 · score 1.39
44.arun11299 / cpp-jwt
JSON Web Token library for C++
+3 stars
from 439 · score 1.39
45.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.
+3 stars
from 388 · score 1.39
46.p-ranav / csv2
Fast CSV parser and writer for Modern C++
+2 stars
from 623 · score 1.10
47.kthohr / stats
A C++ header-only library of statistical distribution functions.
+2 stars
from 557 · score 1.10
48.micro-gl / micro-gl
Headers Only C++11 CPU Vector Graphics. no std-lib, no FPU and no GPU required !
+2 stars
from 392 · score 1.10
49.nonstd-lite / ring-span-lite
ring-span lite - A C++yy-like ring_span type for C++98, C++11 and later in a single-file header-only library
+2 stars
from 168 · score 1.10
50.ddemidov / vexcl
VexCL is a C++ vector expression template library for OpenCL/CUDA/OpenMP
+1 stars
from 721 · score 0.69
51.pfultz2 / Linq
Linq for list comprehension in C++
+1 stars
from 668 · score 0.69
52.cbeck88 / visit_struct
A miniature library for struct-field reflection in C++
+1 stars
from 655 · score 0.69
53.r-lib / cpp11
cpp11 helps you to interact with R objects using C++ code.
+1 stars
from 224 · score 0.69
54.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
55.badaix / popl
Header-only C++ program options parser library
+1 stars
from 178 · score 0.69
+1 stars
from 68 · score 0.69