it's a simple typo.
I suppose thefman meant "stuff" and wants to know if we know of a site that offers (open?) source for (several?) language translation software.

first of all, [I] found no results using over 4 search engines and had no luck on newsgroups. I suppose it is hard to find such a site.

thefman, what is your native language?
even if you can find such site, incorporating the code into your program may not be as easy as it sounds to you unless the code is very user friendly.

or you can do it by scratch although it won't be easy (especially with grammar conversion). it's bound to be more work than rewriting a multi-language translation dictionary.

why not search for a specific translation software rather than create your own?