Screenshot Captor is a tool for grabbing, manipulating, annotating, and sharing screenshots.

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

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

scrible is a research platform for school and work.

Screenpresso screen capture allows you to grab an image or video of what you see on your computer screen, add effects, and share with anyone.

CollabShot is a software that specializes in online collaborations.

Limnu is an online whiteboarding app.