Languages and writing systems
Languages on the web
Thoughts about how languages should (not) be represented on websites:Why you should not use flags to indicate language choice
(in German:) Warum Flaggen nicht für die Auswahl von Sprachen benutzt werden sollten
Languages in general / writing systems / Unicode
Unicode Character PickerUnicode characters reference/test page
Ethnologue — Languages of the World: An excellent online catalogue of the world’s known living languages.
UDHR in Unicode: The Universal Declaration of Human Rights in many languages, Unicode-encoded.
decodeunicode.org: An award-winning guide to the Unicode character set.
Full high-resolution Unicode Chart: A huge bitmap of the full Unicode character set.
Evertype: Michael Everson's website. Lots of language/font/internationalization resources.
Japanese
(German only:) Eine praktische Übersicht über die traditionellen Radikale, die ich für Lernzwecke erstellt habe:Traditionelle Radikale (pdf, vier Seiten, mit Kanji-Beispielen)
Jim Breen's WWWJDIC: The best online Japanese dictionary.
Rikai: Real-time mouse-over translation of Japanese expressions, very convenient.
The Japanese Page: A great starting point for Japanese lovers!
The Kanji SITE: Learn 漢字 (Kanji) online. (Site seems to be dead as of 2013.)
Engrish.com: When Japanese meets English — always a source of amusement!
English
Wordcount / Tracking the Way We Use Language: An interactive presentation of the 86,800 most frequently used English words, by Jonathan HarrisThe English Project: A project to promote the global story of the English language.
The Future of English (pdf): A guide to forecasting the popularity of the English language in the 21st century. By David Graddol.
My favourite online dictionaries: LEO, Oxford Dictionaries and Merriam-Webster Online
Last edit: November 2013, www.btitze.net