SQLConnect is a JDBC connectivity tool that allows the user to browse, query, edit, export, and print data from any JDBC compliant database. It has a rich set of data editing and data manipulation functionality that allows the user not only to query the JDBC database, but also to change its structure and model without writing complex and awkward SQL statements.
SATGUI is a framework for developing simple GUI client/Unix server applications. It uses a simple, easy-to-learn screen layout language (SAT/DL). The backend applications can be developed in almost any character-based language (shell script/Perl/AWK/C/etc.), and a basic interface to MySQL databases (SATMYSQL) is also available.
Database Abstraction Layer is a project to produce a general way to access databases from within PHP. The DAL class takes care of the administration involved with the different kinds of databases. DAL is extendible via plugins so support for different dbms' can be added dynamicly. Also switching from one DBMS to another is simple because not very much has to be altered to support the new DBMS.
KmusicdB is a music information manager for KDE, using PostgreSQL as a backend. You can add your music collection to the database, and view it in a convenient browser. It currently supports the ability to add and edit artists, add and edit titles (with album pictures), and a track editor. The ability to generate reports and statistics, and also to search the database is implemented, as well as creating and opening, backing up and restoring databases. It is highly customizable, and fast. CDDB functionality has also been implemented.
dbMan is a complex SQL monitor for common database systems (PgSQL, Oracle, MySQL etc.). It's based on Perl and DBI interfaces. Features include a command history buffer, tab completion, editing Oracle objects, simultaneous connections, SQL help, importing and exporting of tables, Oracle explain plan, and more. dbMan is made as a simple kernel and many extension modules, and you can make your modules with a simple HOWTO.