First version of Gacutil remote has been released. It manages a remote computer's GAC even if it has no gacutil. It has following features:
Relies on psexec
Requires administrative priveleges on the remote computer
Installs / uninstalls an assembly to a remote computer
Retrieves whole GAC
Error Handling and Custom identity impersonation are missing in this release.
http://tinyurl.com/6d6gnw
source: Codeplex