Social Sharing Platform and Free Link Shortener - Social Media Share Button - Po.st
5 Ways to Build Your Own Reddit Alternative
collexio
Making and Sharing Lists of Lists, People, Places, Things | djchuang.com
Streamable - simple video sharing
Meeting Dashboard - Free Screen Sharing - Online Meetings, Web Conferencing Tools| FreeScreenSharing.com
Chirbit - Record, Upload and Share Audio Easily - Social Audio
Teamgum : Collaboration Tool for teams to share, access and discuss efficiently using browser extension and mobile app.
Bloomfire Knowledge Sharing Software - Bloomfire
How Much Are People Making from the Sharing Economy?