We usually refer to programs that are relatively small or always run in the background as "gadgets" and "widgets". These might serve a number of purposes, e.g. to provide a quick-launch dock or always keep you informed about the weather.
Stardock Software, Inc.
Tiny Taco Team
Computer Fix Software Solutions
Axel Seeger (Bitlein Software)
Advanced Software Products Group, Inc.
Advanced Mouse Auto Clicker, Ltd.
Innovative Interfaces Inc
Abyss Media Company
Pretty Software Inc