XaJaQ aims to provide a web-based visualization of the table structure of a database. A browser with native SVG-support and JavaScript is required. XaJaQ generates SQL-92-style SELECTs during the interactive definition of relations.
Universal TableEditor is an ASP (Active Server Pages) application that can be used for every table in every database you can reach from your IIS (Internet Information Server) on Win NT/2000-Server or PWS (Personal Web Server) on Win NT-WS / Win9x.
Database Organizer is a graphical schema editor. The schema can be transferred from a database ( any of them - Oracle, Postgres, msSQL, etc. ). It includes an SQL builder, schema comparator, index viewer, etc.