Unbound started out as a project to develop independent open-source DNS software and documentation. It was jointly funded by VeriSign, Inc., and the University of Southern California/Information Sciences Institute. The C implementation was based on a prototype written in Java. It was released in May 2008 with this press release.

This section contains several historic documents. There are also presentations about the intial Unbound design delivered at IETF 67 and RIPE 56. The Windows Vista install guide is also available as a PDF.