Postgresql temporal_tables extension in PL/pgSQL
MobilityDB is a geospatial trajectory data management & analysis
Single file PHP script that adds a REST API to a SQL database
General-purpose bitemporal database for SQL, Datalog & graph queries
A modular geospatial engine written in JavaScript
Import OpenStreetMap data into a PostgreSQL/PostGIS database
Database for Go with custom indexing and geospatial support
DBMS supporting graph, document, full-text and geospatial models
Toolkit for working with and mapping geospatial data
An easy way to manage SQLite databases and query CSV files
ETL engine based on Groovy
A database management system for ecological field surveys
Concise spatial query and representation system (c-squares)
A redis protocol compatible nosql, it support multiple storage engines
Program for manage data, like a simple database and for exercises for
Spatial extension for db4o.