Bitcoin Core integration/staging tree

Protocol Buffers - Google's data interchange format

JSON for Modern C++

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

DuckDB is an analytical in-process SQL database management system

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

An open-source C++ library developed and used at Facebook.

The MongoDB Database

The open-source database for the realtime web.

Abseil Common Libraries (C++)

FoundationDB - the open source, distributed, transactional key-value store

A Multithreaded Fork of Redis

MySQL Server, the world's most popular open source database, and MySQL Cluster, a real-time, open source transactional database.

A fast multi-producer, multi-consumer lock-free concurrent queue for C++11

ZeroMQ core engine in C++, implements ZMTP/3.1

A simple C++11 Thread Pool implementation

MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stab…

C++ implementation of the Google logging module

oneAPI Threading Building Blocks (oneTBB)

an efficient feature complete C++ bittorrent implementation

Algorithms & Data structures in C++.

Aleth – Ethereum C++ client, tools and libraries

Nanolog is an extremely performant nanosecond scale logging system for C++ that exposes a simple printf-like API.

Mcrouter is a memcached protocol router for scaling memcached deployments.

Open Source Communication Provider based on WebRTC and Cloud technologies

Wangle is a framework providing a set of common client/server abstractions for building services in a consistent, modular, and composable way.

GridDB is a next-generation open source database that makes time series IoT and big data fast,and easy.

A distributed key-value storage system developed by Alibaba Group

The Self-Driving Database Management System