Stable version

Packages should be available in most distributions (at least distributions providing a package for OBrowser).

If you want to compile OBrowser from sources, download latest versions from here:
obrowser-1.1.1.tar.gz (2011-04-16)
obrowser-1.1.tar.gz (2010-01-22) (signature)

Development version

The sources of the last development version are available as a Darcs repository.

Download them using the command:

darcs get http://ocsigen.org/darcs/obrowser/

Browse sources using darcsweb.