Free online English dictionary that features a search function, word of the day, word games and crossword puzzles, as well as vocabulary learning resources for many languages and a translator.
Where words are defined as pictures, for leaning the exact names of objects. Different from a dictionary or from encyclopedia because the images replace the words.
A site for beginners in astronomy. Contains introductory material on the structure of the Solar system, the planets and their moons. There is a dictionary containing brief articles and a free online course for different age groups (kids aged 6-11 and older students, aged 12-18).
StarDict is a cross-platform and international dictionary written in GTK2; with powerful features such as pattern matching, scan selection, fuzzy queries, etc.
Internet Bonsai Club is an international bonsai community. Communication is through email lists, newsgroup, a website and an interactive gallery and forum. Includes a knowledge base with FAQs, articles and essays, "Ask the Doctor", a dictionary, classes, and book reviews.
Moji is a Mozilla Firebird extension that helps you learn Japanese; embeds a Kanji dictionary and a word dictionary, and provides translations into English, French, and German.