#1
tensorflow/tensorflow
An Open Source Machine Learning Framework for Everyone
Stars 200668
Forks 78132C++ ecosystem
Best open source C++ repositories on GitHub
Browse fast-moving open source repositories across major programming languages and compare which ecosystems are producing the strongest developer momentum right now.
Engineering teams, founders, and developers who want a cleaner view than raw GitHub search.
Why This Matters
Language-specific rankings help teams compare tooling, frameworks, and infrastructure inside the ecosystem they actually use.
What To Look For
Prioritize repositories with recent maintenance, clear adoption signals, and a practical use case that matches your stack.
Best Fit
Engineering teams, founders, and developers who want a cleaner view than raw GitHub search.
How To Evaluate C++ Repositories
The goal is not to sort everything by lifetime stars. Good language pages should help you spot current leaders, breakout projects, and repos that are still shipping actively.
Use the repository detail pages to compare why a project is trending now, who it is for, and what alternatives may fit the same problem.
Related Language Guides
Top C++ Repositories Right Now
A practical shortlist of C++ repositories worth evaluating based on recent GitHub momentum.
#2
ggml-org/llama.cpp
LLM inference in C/C++
Stars 130174
Forks 24008#3
protocolbuffers/protobuf
Protocol Buffers - Google's data interchange format
Stars 72089
Forks 16303#4
ClickHouse/ClickHouse
ClickHouse® is a real-time analytics database management system
Stars 50212
Forks 9050#5
facebookresearch/faiss
A library for efficient similarity search and clustering of dense vectors.
Stars 41018
Forks 4539#6
MarlinFirmware/Marlin
Marlin is a firmware for RepRap 3D printers optimized for both 8 and 32 bit microcontrollers. Marlin supports all common platforms. Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.
Stars 17613
Forks 19724#7
emscripten-core/emscripten
Emscripten: An LLVM-to-WebAssembly Compiler
Stars 27673
Forks 3564#8
xbmc/xbmc
Kodi is an award-winning free and open source home theater/media center software and entertainment hub for digital media. With its beautiful interface and powerful skinning engine, it's available for Android, BSD, Linux, macOS, iOS, tvOS and Windows.
Stars 21279
Forks 6609#9
ValveSoftware/Proton
Compatibility tool for Steam Play based on Wine and additional components
Stars 32966
Forks 1635#10
microsoft/onnxruntime
ONNX Runtime: cross-platform, high performance ML inferencing and training accelerator
Stars 21988
Forks 4271#11
PX4/PX4-Autopilot
PX4 Autopilot Software
Stars 12730
Forks 16101#12
yhirose/cpp-httplib
A C++ header-only HTTP/HTTPS server and client library
Stars 16887
Forks 2765#13
OrcaSlicer/OrcaSlicer
G-code generator for 3D printers (Bambu, Prusa, Voron, VzBot, RatRig, Creality, etc.)
Stars 15836
Forks 3171#14
dolphin-emu/dolphin
Dolphin is a GameCube / Wii emulator, allowing you to play games for these two platforms on PC with improvements.
Stars 15602
Forks 3282#15
bkaradzic/bgfx
Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.
Stars 17532
Forks 2143#16
apple/foundationdb
FoundationDB - the open source, distributed, transactional key-value store
Stars 16742
Forks 1581#17
scylladb/scylladb
NoSQL data store using the Seastar framework, compatible with Apache Cassandra and Amazon DynamoDB
Stars 15783
Forks 1523#18
drogonframework/drogon
Drogon: A C++14/17/20 based HTTP web application framework running on Linux/macOS/Unix/Windows
Stars 14313
Forks 1383#19
nasa/fprime
F´ - A flight software and embedded systems framework
Stars 11807
Forks 1833#20
google/sentencepiece
Unsupervised text tokenizer for Neural Network-based text generation.
Stars 12109
Forks 1385FAQ
How should I use these language rankings?
Use them as a shortlist. Start with the top repositories, open the project detail pages, and compare maintenance pace, momentum, and relevance to your own stack.
Are these pages better than searching GitHub directly?
They are better for discovery because they combine GitHub popularity with recent movement and a cleaner comparison flow.
Does GHTrending only show mature projects?
No. The rankings are designed to surface both established leaders and newer repositories that are gaining momentum quickly.