Interesting translation tools...
Yahoo! Babel Fish: Text Translation and Web Page Translation
http://babelfish.yahoo.com/
Google Translate
http://translate.google.com/#
Translate text or Web pages, the quality is questionable but you can search in other languages.
Language Tools: iTools
http://www.itools.com/lang/
Check several dictionaries at once.
Free Translation Online
http://translation2.paralink.com/http://translation2.paralink.com/
Like Babelfish but offering many more language combinations.
Nice Translator
http://nicetranslator.com/#
This dictionary translates into multiple languages of your choice at the same time.
Frengly
http://www.frengly.com/
Easy to use translator for multiple languages.
Free Online Translator
http://www.worldlingo.com/en/products_services/worldlingo_translator.htm
Currencies and Other Metrics
Currency Converter – Yahoo! Finance
http://finance.yahoo.com/currency-converter#from=USD;to=EUR;amt=1
Bloomberg.com: Calculators
http://www.bloomberg.com/invest/calculators/currency.html
XE – Universal Currency Converter
http://www.xe.com/ucc/
Metric Conversions
http://www.metric-conversions.org/
CalculateMe.com: Comprehensive Conversion Utility
http://www.calculateme.com/index.htm
Unit Conversion
http://www.unitconversion.org/index.html
Language Maps
World Atlas of Language Structures
http://wals.info/languoid
World Language Mapping System
http://www.gmi.org/wlms/users/huffman/#maps
Modern Language Association: Language Map of the USA
http://www.mla.org/map_single&lang_index=&state_index=&source=county&p=N&mapnum=1
Other Alphabets
Russian alphabet (aka Cyrillic alphabet)
http://masterrussian.com/russian_alphabet.shtml
Arabic alphabet, pronunciation and language
http://www.omniglot.com/writing/arabic.htm
Japanese alphabet
http://www.linguanaut.com/japanese_alphabet.htm