AishDas Torah Links (hundreds of selected Torah links, well organized by categories and with search engine)
Our MTR freeware program for the PC (Mechon Mamre's Jewish Legal Classics program for those who read Hebrew, including the Bible, Mishneh Torah, Talmud, and more); also our version of Mishneh Torah and the Bible in Hebrew for the Palm Pilot.
Snunit's Kodesh Site (an all Hebrew site for searching and reading in the Bible and Jewish Law texts with very useful linking between the Bible and Jewish Law texts, based with our permission on the texts as they were on this site in late 2003)
Judaic Seminar (understanding the Bible from a humanistic scholarly observant Jewish perspective, Orthodox Sephardic views on practical problems in Jewish Law, and more)
The About.com Guide to Judaism (formerly the Mining Company's Guide to Judaism--a great resource for Jewish information with extensive links, nicely organized according to subject matter)
Soc.Culture.Jewish FAQ (a large detailed FAQ with information from several movements' perspectives)
Jews for Judaism (the counter-missionary organization, whose FAQ is highly recommended reading for Jews and Gentiles alike)