PostGIS - Open source spatial database
phpMyAdmin - phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web.
H2GIS - A spatial extension of the H2 database. Compliant, Solid, Tested.
Adminer - Adminer (formerly phpMinAdmin) is a full-featured database management tool written in PHP.
QGIS - QGIS is a desktop geographic information system, or GIS.
Vty - Database Manager for Mysql, written with Php.