Stairways Software (http://www.stairways.com) has released Keyboard Maestro 6.0, a new version of its productivity enhancer for Mac OS X. The update includes the following: Macro Syncing Across Macs, Plug-In Actions, Styled Text, Control over Safari and Chrome, New Icons, Icon Chooser/Creator, and a Macro Debugger.

It also adds control flow such as While loops and If/Then/Else statements, as well as permanently stored variables and a complete calculation engine. Version 5 also includes an extensible library of pre-made macros, with a variety of macros that you can build upon. Also new is undo/redo support and revisions, so you can try out new macros with confidence.

Using Keyboard Maestro’s macros you can: control applications, windows, or menus; insert text; open documents, applications or URLs; execute scripts; control the system or iTunes; and more, all with the touch of a key, click of the mouse, periodically or at specific times, when an application is launched or running, or even over the Internet using Keyboard Maestro’s built in web server.

Using Keyboard Maestro’s Program Switcher and Window Switcher you can cycle through applications or windows, closing, hiding, launching, and more. The software lets you close or hide multiple windows or applications. Using Keyboard Maestro’s Clipboard Switcher, you can select from a number of named clipboards, storing information away for later retrieval.

Keyboard Maestro 6.0 requires Mac OS X 10.8 or greater. New customers can purchase Keyboard Maestro for US$36. A free, fully functional trial version is available for download. Upgrades from previous versions are also available.