DocDroid - DocDroid is a service for sharing document and slides.
Zoho Meeting - Free video conferencing, online meeting, desktop sharing solution from Zoho.
SlideShare - Discover, Share, and Present presentations and infographics with the world’s largest professional content sharing community.
FileFlex - FileFlex: Access Share Stream developed and published by Qnext.
Scribd - Unlimited books, audiobooks & comics. Unparalleled discovery. Any device. $8.99/month
Airtime - Hang out with group video, share music & videos