Jagent is a suite for manipulating Creatures 3 and Docking Station agents. It consists of a sprite tool (Edos) and a PRAY tool (Monk). It requires Java (http://java.com/)
Tilemaster is a tool to create, edit and manage tilesets for (C)RPGs and other types of computer games. Tilemaster supports tile metadata and includes a simple tile/sprite editor as well.