Celly is a wonderful free site for using mobile phones/text messaging in the classroom (found out about from a member of my PLN on Twitter). There is a lot to like about using Celly such as: creating a chat, alerting, and even using a curator to approve messages before they get posted (ideal for education). Also, it's ideal for taking notes, interacting w/ web (no phone is actually needed), etc etc.
Tiki-Toci- an esthetically pleasing web-based timeline tool. Students can create interactive multimedia timelines using images, text and videos that are easy to embed.
VoiceThread
With VoiceThread, group conversations are collected and shared in one place from anywhere in the world. All with no software to install.
A VoiceThread is a collaborative, multimedia slide show that holds images, documents, and videos and allows people to navigate pages and leave comments in 5 ways - using voice (with a mic or telephone), text, audio file, or video (via a webcam). Share a VoiceThread with friends, students, and colleagues for them to record comments too.
SOPHIE is an open source tool maintained by USC that allows for creating and reading rich media documents in a networked environment. Sophie authors can easily combine a variety of media - text, images, video and audio into a sophisticated multimedia work.
"Humanities E-Book is a digital collection of nearly 2,800 full-text titles offered by the ACLS in collaboration with twenty learned societies, nearly 100 contributing publishers, and librarians at the University of Michigan's Scholarly Publishing Office. The result is an online, fully searchable collection of high-quality books in the Humanities, recommended and reviewed by scholars and featuring unlimited multi-user access and free, downloadable MARC records. HEB is available 24/7 on- and off-campus through standard web browsers"
Watch2gether is a great site for watching YouTube videos w/ others. This site allows users to discuss YouTube videos via a text chat that opens up on the right side of the window.