GT.M is a high end platform for developing transaction processing database applications. Individual database files in the terabyte range are supported; a logical database can consist of many files. It provides full support for ACID transactions using a Software Transaction Memory (STM) programming model and optimistic concurrency control. The GT.M data model is hierarchical associative memory (i.e. multi-dimensional arrays) that imposes no restriction on the data types of the indexes or content, nor any restriction on the schema is that imposed by the application. Such databases are also referred to as "document oriented", "schemaless", or "schema-free".
GTKtalog is an archiver to store a CD file tree structure. It can be used to easily browse a CD-ROM database. Each disk, folder and file has a size, date, category, description, and content parameter and can be completely edited or deleted. The file search module can do searches on filename, foldername with name, category description, date, filesize, and content parameter. Each filetype has its own icon. It possible to use programs like tar, arj, zip, or scripts to extract information from files to include in the database. Gtktalog can mount, scan, umount, and eject a CD-ROM in the background.
HaruspeX is a visual environment for image databases. You are able to store and perform queries by image content (given an image, retrieve all the one similar to the given one) in a PostgreSQL database. You can use HaruspeX either as a standalone X11/GTK application or as a GIMP extension, in interactive, batch or WWW mode.