SpatiaLite is a freely available library that enhances the functionality of SQLite, a lightweight and uncomplicated database engine. It adds spatial SQL capabilities to SQLite, allowing users to work with spatial data efficiently. Unlike traditional databases, SQLite stores the entire database in a single file, making it easily transferable across different platforms. SpatiaLite seamlessly integrates with SQLite, offering a robust spatial database management system that is comparable to PostgreSQL and PostGIS. The software is licensed under the MPL tri-license terms, providing users with flexibility in choosing the licensing options. Its development has been supported by the Tuscany Region’s Territorial and Environmental Information System.
https://www.gaia-gis.it/fossil/libspatialite/index