Code by Kevin has released Manpower 4.0 (, a program that provides a three-pane interface designed to make reading Unix documentation pages on Mac OS X as easy as reading e-mail.
Manpower is a Mac OS X graphical user interface to the main system of Unix software documentation, the “man page.” Man pages are typically accessed in the Unix terminal, which can be tedious and difficult to read. Manpower provides a three-pane interface.

Manpower 4.0 offers a native Cocoa toolbar and native Cocoa printing. It can be set as default viewer for man pages. The latest version offers improved AppleScript support, support for hyperlinks in man page and integration with the native Mac help viewer. 
To install Manpower, download the latest version. It can be installed anywhere on your machine. The download is a 30-day demo; you can purchase a license to use the program past the 30-day trial period. The app is also available from the Mac App Store. Mac OS X 10.6 is the minimum supported platform, and the app supports Intel only. A license for the full version of Manpower is US$24.99.