Krut is a screencast tool that is written in Java and well suited for making video tutorial. Developed by Jonas Ostby
License: Open Source
Apps available for Windows Linux
ScreenFlow is a screencasting and video editing software for the OS X operating system. Developed by Telestream
License: Commercial
Apps available for Mac OS X
Krut is a free, lightweight screen recording tool suitable for users needing basic functionality, while ScreenFlow is a professional-grade software offering advanced editing features but at a premium price.