1.nlohmann / json
JSON for Modern C++
+28 stars
from 50,801 · score 3.37
Trending repositories
Ranked by Attention Score: stars gained over the last 7 complete days
38 repositories by Attention Score · Oct 27, 2026 – Nov 2, 2026 (UTC)
2.gabime / spdlog
Fast C++ logging library.
+22 stars
from 29,705 · score 3.14
3.yhirose / cpp-httplib
A C++ header-only HTTP/HTTPS server and client library
+16 stars
from 16,938 · score 2.83
4.skypjack / entt
Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more
+14 stars
from 13,224 · score 2.71
5.Immediate-Mode-UI / Nuklear
A single-header ANSI C immediate mode cross-platform GUI library
+14 stars
from 11,466 · score 2.71
6.g-truc / glm
OpenGL Mathematics (GLM)
+13 stars
from 11,274 · score 2.64
7.stephenberry / glaze
Extremely fast, in memory, serialization, reflection, and RPC library for C++. JSON, BEVE, BSON, CBOR, CSV, JSONB, MessagePack, TOML, YAML, EETF
+13 stars
from 3,082 · score 2.64
8.Neargye / magic_enum
Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code
+8 stars
from 6,241 · score 2.20
9.marzer / tomlplusplus
Header-only TOML config file parser and serializer for C++17.
+8 stars
from 2,171 · score 2.20
10.CrowCpp / Crow
A Fast and Easy to use microframework for the web.
+7 stars
from 5,016 · score 2.08
11.ToruNiina / toml11
TOML for Modern C++
+4 stars
from 1,306 · score 1.61
12.p-ranav / argparse
Argument Parser for Modern C++
+3 stars
from 3,560 · score 1.39
13.martinus / nanobench
Simple, fast, accurate single-header microbenchmarking functionality for C++11/14/17/20
+3 stars
from 1,747 · score 1.39
14.idea4good / GuiLite
✔️The smallest header-only GUI library(4 KLOC) for all platforms
+2 stars
from 7,780 · score 1.10
15.taocpp / PEGTL
Parsing Expression Grammar Template Library
+2 stars
from 2,168 · score 1.10
16.pocketpy / pocketpy
Portable Python 3.x Interpreter in Modern C
+2 stars
from 2,133 · score 1.10
17.skypjack / uvw
Header-only, event based, tiny and easy to use libuv wrapper in modern C++ - now available as also shared/static library!
+2 stars
from 2,055 · score 1.10
18.vimpunk / mio
Cross-platform C++11 header-only library for memory mapped file IO
+2 stars
from 1,959 · score 1.10
19.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
20.eyalz800 / zpp_bits
A lightweight C++20 serialization and RPC library
+2 stars
from 1,011 · score 1.10
21.cppfastio / fast_io
Freestanding fast input/output for C++20
+2 stars
from 855 · score 1.10
22.Sedeniono / tiny-optional
Drop-in replacement for std::optional that does not waste memory unnecessarily
+2 stars
from 157 · score 1.10
23.keithpotz / CrashCatch
Cross-Platform, Efficient easy to integrate crash reporting library for modern C++
+2 stars
from 109 · score 1.10
24.doctest / doctest
The fastest feature-rich C++11/14/17/20/23 single-header testing framework
+1 stars
from 6,901 · score 0.69
25.hanickadot / compile-time-regular-expressions
Compile Time Regular Expression in C++
+1 stars
from 3,872 · score 0.69
26.pantor / inja
A Template Engine for Modern C++
+1 stars
from 2,005 · score 0.69
27.max0x7ba / atomic_queue
C++14 concurrent lock-free low-latency queue.
+1 stars
from 1,901 · score 0.69
28.Tessil / robin-map
C++ implementation of a fast hash map and hash set using robin hood hashing
+1 stars
from 1,516 · score 0.69
29.Dobiasd / frugally-deep
A lightweight header-only library for using Keras (TensorFlow) models in C++.
+1 stars
from 1,128 · score 0.69
30.Tessil / hat-trie
C++ implementation of a fast and memory efficient HAT-trie
+1 stars
from 874 · score 0.69
31.cxong / tinydir
Lightweight, portable and easy to integrate C directory and file reader
+1 stars
from 873 · score 0.69
32.ZigRazor / CXXGraph
Header-Only C++ Library for Graph Representation and Algorithms
+1 stars
from 737 · score 0.69
33.taocpp / json
C++ header-only JSON library
+1 stars
from 682 · score 0.69
34.mxmlnkn / rapidgzip
Gzip Decompression and Random Access for Modern Multi-Core Machines
+1 stars
from 471 · score 0.69
35.aurora-opensource / au
A C++14-compatible physical units library with no dependencies and a single-file delivery option. Emphasis on safety, accessibility, performance, and developer experience.
+1 stars
from 448 · score 0.69
36.EmberEmu / Hexi
Header-only, lightweight C++ library for binary streaming & serialization. Network data handling made easy peasy!
+1 stars
from 288 · score 0.69
37.PragmaTwice / protopuf
Protocol Puffers: A little, highly templated, and protobuf-compatible serialization/deserialization header-only library written in C++20
+1 stars
from 208 · score 0.69
38.gistrec / geo-utils-cpp
Tiny header-only C++17 library for lat/lng geometry: distance, bearing, area, point-in-polygon and path proximity
+1 stars
from 54 · score 0.69