GAPPIN  This program helped me a lot when getting audio out of DVDs in Leopard. The other options were using many programs that were flaky. Thanks a lot!  
(Version 0.25)

GAPPIN  Here's the path that worked for me in 10.5.4.

Users/user/Library/Application Support/Mail/Stationery/Apple/Contents/Resources/Custom/Contents/Resources/XXXX.mailstationery

You can change the "Custom" folder to be whatever category name you'd like.  
(Version 1.0)

GAPPIN  Very funny application. I like trying out terms and learning their "translations." There are a lot of different "flavors" in the application too. Thanks for the laughs.  
(Version 2.2u)

GAPPIN  Laukar summarizes the game very well. I had fun for a couple years but no longer play because of the reasons mentioned. I don't recommend getting started.  
(Version v505)

GAPPIN  This is a very elegant implementation -- very easy to input numbers, colorful tiles, and multiple difficulty settings.

There's an amazing feature that lets you print off any puzzle and gives you a code to continue that specific puzzle on the computer again if you want. (One bug I noticed is that the printout leaves off one of the zeros at start of the code.)

I would love to be able to increase the size of the tiles/board as well as take notes in the tiles (like the Sudoku game for PS3).

To everyone involved in making the game, thank you.  
(Version 0.94)