Jumpshare is a file sharing service which allows users to upload files from their PC, Mac, and web.

BeeCanvas is an online whiteboard based visual collaboration tool.

Limnu is an online whiteboarding app.

Annotary is the social bookmarking and annotation platform that lets you catalog and share everything you read online.

Hypothes.is is a web-based annotation tool for websites.

scrible is a research platform for school and work.