Notational Velocity is a Mac OS X desktop application that stores and retrieves notes. The same area is used both for creating notes and searching. I.e., in the process of entering the title for a new note, related notes appear below, letting users file information there if they choose. Likewise, if a search reveals nothing, one need simply press return to create a note with the appropriate title.
iMan is a man page viewer for Mac OS X. It provides a native Aqua interface as an alternative to the use of the man program via the Terminal. A variety of useful features have been implemented, including multiple viewing windows, viewing of man pages as well as any man-format file on disk, support for apropos and whatis database searches, as well as in-page search with regular expressions, browser-style history (forward and back within any window), user-customizable font styles, and support for links to man pages in several forms (man:groff(1), man://groff/1, and man://1/groff are all supported). The reusable framework core can be embedded in other applications to provide man page handling functionality.