PUBLIC MARKS with tags file & social

cyn.in is a software tool developed by Cynapse, that inter-connects your people with each other and their collective knowledge, seamlessly. cyn.in helps teams to create collective knowledge by sharing workspaces, applications, documents, files and digital content within a secure, unified environment. cyn.in combines the capabilities of collaboration tools like wikis, blogs, file repositories, micrologs instant discussions and other social applications into a seamless platform. The cyn.in desktop client keeps users updated with its unique activity stream while enabling instant discussions within any document, file or content.

Openomy is an online file system. You can store files on Openomy and access them from any computer. Openomy organizes files and users via tags (as opposed to folders). You can choose to keep your files guarded by Openomy, or allow certain outside applications (of your choice) to do new and interesting things with your data. well it's semi-social.