Canoo contains comprehensive information about German linguistics such as grammar and spelling etc.

Well this is a sorry excuse for a terminology resource but it will have to do until IBM get their act together and present something more worthy.

Here is a list of Mozilla glossary files from previous releases for reference. Translation consistency and quality can be greatly improved if there are glossary files for reference.

Over 6000 glossaries collected by the Portuguese translator J. Roque Dias. Very impressive

Novell Corporate Localization Services, there are also Translation Style Guides, you'll find them if you look around. as of the lates update this is as you will see a site more devoted to Suse (linux) but it is still valid as a good resource of information.

Apple, here you find the glossaries from Apple if you're working on projects that used Apple terminology (OS X & Windows).

Microsoft Glossaries A necessary reference for any serious Localizer. These glossaries can also be found on one of the MSDN cds. Download them now, but keep looking for updates it is too late when you are told you've used old terminology!!