Online education is a new tool and very flexible for learning. Now mostly all the people prefer for online education as by continuing job one can study anywhere any place at any time. Some of the technologies used in online education are as follow:

Screen casts.
Palm casts.
Mp3 Players.
Hypermedia.
Multimedia CD-roms.
Websites.
Discussion Boards.
Collaborative software.
Emails.
Blogs.
Wikis.
Test Chart.
Computer aided assessment.
Educational Animations.
Simulations.
Games.
Learning Management Software.
Forums.
FAQ.
Web conferencing.