There's Monolingual, similar to Xslimmer but only removes whatever languages you do not need, it's free.
http://www.macupdate.com/app/mac/7758/monolingual (click on the Download Older Version link for the PPC version)
And then there is TrimTheFat, which I've never used but it's also free.
http://www.macupdate.com/app/mac/20404/trimthefat
Monolingual supports binary stripping too. The only advantage Xslimmer has is the streamlined UI and some extra features like backups and blacklisting etc.