Work with: MySQL, PostgreSQL, FirebirdSQL. Use PHP, and ExtJS. Browse in Tree: db,table,column,constraint,trigger,view,proc. Has history, and fragments panel. Editor has autocomplete, autoindent. Easy install, unpack in webroot and edit "set.php"
GTK-DBExplorer is a PHP-GTK multi database administration tool. It supports many DBMS's through adoDB Abstraction layer. It will have a SQLEditor with autocomplete, table editor for any DBMS and data explorer.
Materialized views for MySQL updated by a smart php-written background thread. Comes with an admin panel that allows you to easily create and manage: Precomputed aggregate queries, precomputed rankings and flexible fulltext+sortcrit indexes.