Mac Update Engine from Google

Update Engine is a OS X framework that can help users keep their products up-to-date. It can update nearly any type of software, including Cocoa apps, screen savers, and preference panes. It can even update kernel extensions, regular files, and root-owned applications. Update Engine can even update multiple products just as easily as it can update one.

The following are some unique features of Update Engine:

• Can update virtually any type of product (e.g., Cocoa app, pref pane, kernel extension)
• Can update non-bundle-based products (e.g., command-line tool, plain file)
• Can update many products at once
• Solid framework on which to build

For more information please visit official Google Site : Update Engine