Lasso.net - Collect and organize the web with Lasso web clipper
Teampaper Snap - Take a snapshot, highlight key areas and share feedback
Zight (formerly CloudApp) - Better Communication, Happier, More Productive People
Epic Pen - A windows tool for drawing over your desktop and applications
LiveAgent - LiveAgent is a fully-featured web-based live chat and help desk software. It harnesses the power of a universal inbox, real-time live chat, built-in call center, and a robust customer service portal. Start your free 1 month trial today!
ppInk - a fork from gInk, with extra features (shape drawings, text,...)