Founded in 2004 by JeremyRuston, Osmosoft was originally a consultancy for software services around TiddlyWiki. Notable engagements included working with Socialtext on Socialtext Unplugged.

In 2007, Osmosoft was acquired by BT and became the champions for open source within the enterprise. As part of BT, Osmosoft has worked on a diverse range of projects within BT and for BT's customers.

See http://osmosoft.com/