Spectral Class software products are released under a shareware. You are free to use them but, if you find them useful and continue to use them, you are obligated to buy a license.

Quarto
Quarto is a 3D board game for Mac OS X. It supports playing against a computer opponent, a human opponent sitting at the same computer (a hot seat game) or against another player across the internet.

Skeleton Key
Skeleton Key is a utility for Mac OS X which makes it easier to access files which otherwise require administrator access. Since there are many files which normal users are not allowed to touch (because they are critical to the system), any time they require manual modification, the user needs to be familiar with the command line to change them. Skeleton Key makes it possible to open specific programs or documents as the system administrator (password required, of course) without resorting to the command line.

Open Source Offerings
We also offer some open source programs (the source is included under the MIT License). See our Open Source software page for more information.