ProfHacker has a longstanding interest in tools for screen capture, screencasts, and the like. We’ve reviewed apps like Skitch (Mac), Greenshot (Windows), Screenr (browser-based), and ScreenSteps.
Mac: If you've ever spent an hour using Photoshop or GIMP to create tutorials by inserting instructions onto images you'll enjoy Clarify. The app creates a screen capture and allows you to append and ...