knoda
- Knorr's Datenbank, a database frontend for KDE under Linux. It is based on hk_classes. News, documentation, screenshots, changelog, FAQ and a mailinglist for discussions.
- http://knoda.sourceforge.net/

kmysqladmin
- A software, written with QT and KDE, to manage mysql-servers.
- http://www.alwins-world.de/wiki/programs/kmysqladmin

Kexi
- An integrated environment for managing data. It helps creating database schemas, inserting, querying and processing data. Screenshots, downloads, resources, a wiki and a list of involved developers.
- http://www.kexi-project.org/

DbDesigner
- A visual database designer suitable for designing complex database models.
- http://dbdesigner.sourceforge.net/

Kuery for MySQL
- Tries to offer a GUI for MySQL administration. The UI superficially resembles portions of Microsoft's Enterprise Manager for SQL Server. Description, discussion and software download.
- http://sourceforge.net/projects/kuery/

Novinyl
- A lightweight desktop database for KDE. It only supports flat data, no SQL or even simple linked data.
- http://mindx.sourceforge.net/novinyl/

Rekall
- A Database Management System for KDE.
- http://www.thekompany.com/projects/rekall/

KPGsql
- A frontend for the database system postgresql.
- http://home.primusnetz.de/mgeisler/kpgsql/

KDE-DB
- Was KDB. Set of libraries to minimize the effort needed to develop database applications for KDE.
- http://www.thekompany.com/projects/kdb/

KSql
- Previously known as KMySql, KSql is a KDE database client.
- http://ksql.sourceforge.net/