toxicsoftware.com

TXTableView is a subclass of NSTableView that allows the user to show or hide table columns by any of three methods:

1. Control clicking (context clicking) the table header and picking columns from the contextual menu.
2. Clicking the top right corner widget. Again this pops up the column contextual menu.
3. Through a separate table inspector GUI (probably just a list of check-boxes).

Thanks to the members of the Mac GUI Dev mailing list for suggestions.

Screenshot:

(Update: Removed https scheme from the source URL)

(Update 2: A bzip2 archive of the current snapshot of the source code is available here: http://toxic-public.googlecode.com//archives/TXTableView.tar.bz2)

(Update 3: I failed to specify what license this code is under. Well feel free to do whatever you want with it - it is released under the public domain.)