PostgreSQL is a powerful, open source object-relational database system with over 35 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.
SQLite
SQLite is an in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine.
SQLCipher
SQLCipher is a standalone fork of SQLite that adds 256 bit AES encryption of database files and other security features
MySQL
MySQL is a open-source, free and very popular relational database management system which is developed, distributed and supported by Oracle corporation.
DuckDB
DuckDB is an in-process SQL OLAP database management system. Simple, feature-rich, fast & open source.
MongoDB
MongoDB is a source-available, cross-platform, document-oriented database program. Classified as a NoSQL database product, MongoDB uses JSON-like documents (called BSON) with optional schemas.
libSQL
libSQL is a production-ready fork of SQLite, maintained by Turso.
IBM DB2
IBM Db2 is a relational database that provides high-performance, scalability and reliability for storing and managing structured data.