TreePad was a personal information manager software for Windows. It was a popular tool due to its mix of an organizer, database, and word processor capabilities. It was offered in few different editions (TreePad Lite, TreePad Plus, TreePad Business and TreePad X Enterprise being the most popular).
TreePad was actively developed from 1995 until 2019. Since then, the software is no longer maintained and there is no customer support for it. Their web site is also no longer available.