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.
+2,879 stars
from 40,493 · score 7.97
Trending repositories
Ranked by Attention Score: stars gained over the last 180 complete days
53 repositories by Attention Score · May 7, 2026 – Nov 2, 2026 (UTC)
2.gabime / spdlog
Fast C++ logging library.
+1,223 stars
from 28,504 · score 7.11
3.federico-busato / Modern-CPP-Programming
Modern C++ Programming Course (C++03/11/14/17/20/23/26)
+1,158 stars
from 15,112 · score 7.06
4.simdjson / simdjson
Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks
+897 stars
from 23,597 · score 6.80
+866 stars
from 42,714 · score 6.77
6.yhirose / cpp-httplib
A C++ header-only HTTP/HTTPS server and client library
+685 stars
from 16,269 · score 6.53
7.changkun / modern-cpp-tutorial
📚 Modern C++ Tutorial: C++11 to C++26 On the Fly | https://changkun.de/modern-cpp/
+678 stars
from 25,258 · score 6.52
8.AnthonyCalandra / modern-cpp-features
A cheatsheet of modern C++ language and library features.
+418 stars
from 21,515 · score 6.04
9.rigtorp / awesome-modern-cpp
A collection of resources on modern C++
+274 stars
from 12,912 · score 5.62
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.
+271 stars
from 4,241 · score 5.61
11.doctest / doctest
The fastest feature-rich C++11/14/17/20/23 single-header testing framework
+238 stars
from 6,664 · score 5.48
12.andreasfertig / cppinsights
C++ Insights - See your source code with the eyes of a compiler
+225 stars
from 4,462 · score 5.42
13.Alinshans / MyTinySTL
Achieve a tiny STL in C++11
+168 stars
from 12,300 · score 5.13
14.p-ranav / awesome-hpp
A curated list of awesome header-only C++ libraries
+111 stars
from 4,073 · score 4.72
15.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
+102 stars
from 2,039 · score 4.63
16.martinus / nanobench
Simple, fast, accurate single-header microbenchmarking functionality for C++11/14/17/20
+67 stars
from 1,683 · score 4.22
17.p-ranav / indicators
Activity Indicators for Modern C++
+58 stars
from 3,363 · score 4.08
18.taocpp / PEGTL
Parsing Expression Grammar Template Library
+57 stars
from 2,113 · score 4.06
19.bloomberg / bde
Basic Development Environment - a set of foundational C++ libraries used at Bloomberg.
+49 stars
from 1,805 · score 3.91
20.nCine / nCine
A cross-platform 2D game engine
+47 stars
from 1,298 · score 3.87
21.biojppm / rapidyaml
Rapid YAML - a library to parse and emit YAML, and do it fast.
+42 stars
from 720 · score 3.76
22.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).
+38 stars
from 1,608 · score 3.66
23.fraillt / bitsery
Your binary serialization library
+36 stars
from 1,233 · score 3.61
24.Qihoo360 / evpp
A modern C++ network library for developing high performance network services in TCP/UDP/HTTP protocols.
+33 stars
from 3,742 · score 3.53
25.VcDevel / Vc
SIMD Vector Classes for C++
+33 stars
from 1,517 · score 3.53
26.p-ranav / tabulate
Table Maker for Modern C++
+30 stars
from 2,149 · score 3.43
27.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.
+29 stars
from 8,218 · score 3.40
28.vimpunk / mio
Cross-platform C++11 header-only library for memory mapped file IO
+29 stars
from 1,932 · score 3.40
29.softwareQinc / qpp
Modern C++ quantum computing library
+27 stars
from 651 · score 3.33
30.adishavit / argh
Argh! A minimalist argument handler.
+25 stars
from 1,419 · score 3.26
31.bfgroup / Lyra
A simple to use, composable, command line parser for C++ 11 and beyond
+22 stars
from 583 · score 3.14
32.martinus / robin-hood-hashingArchived
Fast & memory efficient hashtable based on robin hood hashing for C++11/14/17/20
+20 stars
from 1,600 · score 3.04
33.dev-cafe / cmake-cookbook
CMake Cookbook recipes.
+19 stars
from 2,829 · score 3.00
34.sony / nmos-cpp
An NMOS (Networked Media Open Specifications) Registry and Node in C++ (IS-04, IS-05)
+19 stars
from 180 · score 3.00
35.NVIDIA / thrustArchived
[ARCHIVED] The C++ parallel algorithms library. See https://github.com/NVIDIA/cccl
+16 stars
from 4,978 · score 2.83
36.fktn-k / fkYAML
A C++ header-only YAML library
+16 stars
from 138 · score 2.83
37.cbeck88 / visit_struct
A miniature library for struct-field reflection in C++
+15 stars
from 641 · score 2.77
38.muellan / clipp
easy to use, powerful & expressive command line argument parsing for modern C++ / single header / usage & doc generation
+13 stars
from 1,312 · score 2.64
39.ldionne / dyno
Runtime polymorphism done right
+13 stars
from 1,032 · score 2.64
40.renatoGarcia / icecream-cpp
🍦 Never use cout/printf to debug again
+13 stars
from 737 · score 2.64
41.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.
+11 stars
from 154 · score 2.48
42.arun11299 / cpp-jwt
JSON Web Token library for C++
+9 stars
from 433 · score 2.30
43.mpark / variant
C++17 `std::variant` for C++11/14/17
+8 stars
from 709 · score 2.20
44.Bhupesh-V / 30-seconds-of-cppArchived
30 Seconds of C++ (STL in C++). Read More about 30C++ here 👉
+7 stars
from 1,482 · score 2.08
45.p-ranav / csv2
Fast CSV parser and writer for Modern C++
+7 stars
from 618 · score 2.08
46.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.
+6 stars
from 385 · score 1.95
47.pfultz2 / Linq
Linq for list comprehension in C++
+4 stars
from 665 · score 1.61
48.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
+3 stars
from 66 · score 1.39
50.badaix / popl
Header-only C++ program options parser library
+2 stars
from 177 · score 1.10
51.imakris / mexce
Single-header C++ JIT compiler/evaluator for mathematical expressions
+2 stars
from 4 · score 1.10
52.r-lib / cpp11
cpp11 helps you to interact with R objects using C++ code.
+1 stars
from 224 · score 0.69
53.evgenykislov / ctrl-c
Crossplatform code to handle Ctrl+C signal
+1 stars
from 30 · score 0.69