You can find OpenMW sources in our OpenMW git repository on GitHub.
Packages are available in our Launchpad PPA.
Packages are available in Debian repository.
There’s an OpenMW package available in the [community] repository, or if you would like to test bleeding edge git version, then proper packages are available in AUR repository Arch Linux AUR.
EBUILD for Gentoo is available in: Gentoo repository.
Packages are available in OpenSUSE repository.
Packages for x86 and x86_64 are available in RPM Fusion repository.
OS X / Windows / Other Linux
Executables and packages are available at:
OpenCS user manual
Latest version of OpenCS user manual.