As the name suggest, Startup Manager is a program that provides you the possibility to manage the Windows startup procedure.
It offers you the possibility to control which programs automatically start up and more.
The project is created by Glenn Van Loon back in August 2005. A couple of months later it already was a very useful piece of software. Glenn then decided to get the project hosted on sourceforge.net and release its source code. From then on, Startup Manager is known on sourceforge as st-m.