http://www.opensourceshakespeare.org Open Source Shakespeare. This site has the complete works of William Shakespeare - all his plays, sonnets and other poetry - with a lot of interesting tools to aid in serious studies of the Bard's works. Each of the works is completely searchable and the sonnets can viewed individually, or side by side.
www.shakespeare-online.com Shakespeare Online. This site provides free and original information on Shakespeare to students, teachers, and Shakespeare enthusiasts in general. If you like this site, you might also want to check out another related site on About.com. About's Shakespeare Guide brings you interesting articles on the Bard each week and annotated links to the best sites on the net. There are currently over 600 annotated Shakespeare links, and additions are made on a regular basis.
http://www.shmoop.com Shmoop. Shmoop will make you a better lover (of literature, history, life). See many sides to the argument. Find your writing groove. Understand how lit and history are relevant today. We want to show your brain a good time. Our mission: To make learning and writing more fun and relevant for students in the digital age. Categories include Literature, Poetry, Shakespeare, US History, Civics, Economics and PreAlgebra.