SQLite is a relational database management system that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is written in C and is the most widely deployed SQL database engine in the world. The simple and self-contained nature of SQLite makes it extremely portable and easy to use, that's why it's widley used in development builds, serverless applications and baked in with a wast majority of software. The database is developed by a single person (D. Richard Hipp), in the open and the source code for the project is released as public domain.