History
Vimperator was the first project from Vimperator labs and initially written by Martin Stubenschrott. Being a Vim-lover, at the beginning of 2007 he realized that he spent more and more time browsing the Web instead of writing code in his favorite editor. The remedy this situation, he looked into extending his favorite browser Firefox and Vimperator was born.
In 2008, Vimperator's ideas really took off and lots of new contributors started improving Vimperator. Martin also decided to investigate a possible port of Vimperator to other Mozilla applications, like Thunderbird. Especially Doug Kearns and Kris Maglione helped in designing a library - called liberator - which provides a framework to create Vim-like applications. Muttator and Xulmus followed soon and currently a vivid community with many hackers is working on the projects.
Contact
Please send comments/bug reports/patches to the mailing list, where a lively community will properly answer most questions. You can also join the #vimperator IRC channel on freenode.