LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

A library that provides an embeddable, persistent key-value store for fast storage.

The open-source database for the realtime web.

Fast C++ logging library.

FlatBuffers: Memory Efficient Serialization Library

A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch)

A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning …

Apache Arrow is the universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics

A fast JSON parser/generator for C++ with both SAX/DOM style API

Mobile Shell

Cap'n Proto serialization/RPC system - core tools and C++ library

a small build system with a focus on speed

A microbenchmark support library

A fast, scalable, high performance Gradient Boosting on Decision Trees library, used for ranking, classification, regression and other machine learning tasks for Python, R, Java, C++. Supports comp…

YDB is an open source Distributed SQL Database that combines high availability and scalability with strong consistency and ACID transactions

Perforator is a cluster-wide continuous profiling tool designed for large data centers

Code beautifier

A C++ library of Concurrent Data Structures

C/C++ language server supporting multi-million line code base, powered by libclang. Emacs, Vim, VSCode, and others with language server protocol support. Cross references, completion, diagnostics, …

YTsaurus is a scalable and fault-tolerant open-source big data platform.

QML based X11 and Wayland display manager

Parallel t-SNE implementation with Python and Torch wrappers.

Boost.org asio module

LIBLINEAR -- A Library for Large Linear Classification

Programmable CUDA/C++ GPU Graph Analytics

Formatted C++20 stdlib man pages (cppreference)

A (work-in-progress) nextgen Doxygen for C++

C++ application development framework, to help developers create and deploy applications quickly and simply

PCG — C++ Implementation

A multi-model machine learning feature embedding database