The Human-Languages Page , by Tyler Chambers, has links to nearly 2000 language-related web sites, including a few hundred glossaries. The Translator's Home Companion at Language Automation, Inc. also has hundreds of glossaries, sorted by language or by subject . Babylon.com has glossaries of many subjects in multiple languages.
There have been many great software localization projects in the past, usually specific to a particular computer language or operating system. Their glossaries are also valuable references for Internet and Web. The Microsoft glossaries are standard tools in most software localizer toolkits. Also take a look at Apple , SGI , and Sun . There are language-specific localization tools for Perl , for C, and for Java .
Frank Dietz' web page has a non-searchable listing of 1500 glossaries.
Cecilia Falk offers a Language Links page .
Gabe Bokor's List of Glossaries and Dictionaries at Translation Journal