Jing

Its simple format and the ability to quickly upload screencasts has made Jing useful for virtual reference in libraries.
 * Jing** is a screencasting software launched in 2007 as Jing Project by the TechSmith Corporation. It is free to download and use. The software takes a picture or video of the user's computer screen and uploads it to the Web, FTP, computer or clipboard. A URL is automatically created and can be shared with others to view or access the uploaded file. Jing is compatible with Macintosh and Windows. Users are required to sign up for an account before using the software.