Bi-directional word-processors, keyboards and keyboard stickers:
Jewish Software

Selected Torah websites:
MiBereshit
Breslov
Chabad
Jewish Law
Aish
YUTorah
Virtual Beit Midrash
WebYeshiva
613

Selected blogs
Hirhurim
Cross-Currents
The Seforim Blog
Eruv Online
Belogski

Hebrew calendar and Shabbat-time calculators
Hebrew calendar
Shabbat times

Index of Torah and Jewish academic articles
RAMBI

Free Torah libraries
Mechon-Mamre
Daat
Mikranet
Hebrewbooks.org

Purchasable Torah libraries
Basic libraries
Bar Ilan Responsa project: Online access; To buy
DBS
Otzar HaChochma (Online access or to buy)