Norms and stimuli for timed picture naming in seven different languages (American English, German, Mexican Spanish, Italian, Bulgarian, Hungarian, and the variant of Mandarin Chinese spoken in Taiwan) http://crl.ucsd.edu/~aszekely/ipnp/index.html
CELEX Database for word frequencies in English, Dutch and German: http://celex.mpi.nl/.
Its use is quite complex at first. Ask me if you have trouble. There is a "how-to" on the intranet too.
Here is the user guide in English, and in German
LEXIQUE Database for word frequencies in French: http://www.lexique.org/. Much easier to use, but mainly in French. It has a useful Google translate button.
Great page about statistics "do it yourself" from the UCLA phonetics lab (with lots of useful stuff from error bars in excel to ANOVA and discrimination analysis): Click here