C++ based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)

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

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.

Record and Replay Framework

Simple .INI file parser in C, good for embedded systems

Use bloomfilter as local memory cache for fast set operation