foundationstone: A full self-study tutorial with suggested exercises. Includes software (free download) for vocabulary practice.

morim.com: Hebrew basics, to get you started, including a printable guide on conjugating verbs. Site is in French. There are also many printable pages of conversation and vocabulary here.

JeMM: Four Hebrew lessons introducing letter and vowel sounds. Uses Flash. Includes sound and exercises.

Hebrew Alphabet Learning Program: Interactive courseware from the Hebrew University of Jerusalem. Uses Flash. Includes sound and exercises.

elanguage: Vocabulary builder, phrasebook, and talking dictionary sections, all with sound files and pictures.

newSLATE: Take quizzes on your own Hebrew study materials, or on prepared materials, when you sign up for a free account.

zigzagworld: Interactive Java applets let you create scenes from a list of Hebrew words.  Encourages sight recognition of basic vocabulary, and can be used by very young children. Also, try this reading comprehension activity that lets you arrange objects according to a story.

Lookstein Center: Intermediate or advanced students may want to try these lessons based on online Israeli newspaper articles. Requires browser with Hebrew fonts.

Try these college resources.