PSPP is a program for statistical analysis of sampled data. It is a free replacement for the proprietary program SPSS.

Kalzium is a full-featured chemistry application, including a Periodic Table of Elements, chemical reference, chemical equation solver, and 3D molecule viewer.

GCO is a database for keeping track of your comics collection. It supports titles, publishers, types, writers, pencilers, inkers, cover prices, current prices, comments, and much more. It also allows you to sort the list in various ways.

Krecipes is a KDE application designed to manage recipes. It can help you to do your shopping list, search through your recipes to find what you can do with available ingredients and a diet helper. It can also import or export recipes from files in various format (eg RecipeML or Meal-Master) or from databases.

KGet is an advanced download manager with support for Metalink and Bittorrent. Downloads are added to the list, where they can be paused, queued, or scheduled for later.