Dustin Bachrach, a Rice student and developer of Mac OS X applications and the web has posted this list of Unknown Mac Apps. He is at least right about the fact they are not well known.
On his page, there are descriptions and links, but here are the ones he lists:
1. Boink (formerly myTunes)
2. Backdrop
3. WikiNotes
4. Dashboard KickStart
5. DesktopCalendar
6. FreeDMG
7. CocoaMySQL
8. NightShift
9. iTunes XHTML Playlist
10. Service Scrubber
11. AsyncKeys
While these are probably good apps I am sure these aren’t the only ones. The original list is a little dated, but the comment section here also lists quite a few applications as well.
See it here.
