Cogco has released ClassicBooster, which is designed to optimize the Classic environment under Mac OS X by letting you fully customize Classic.
Using ClassicBooster you can expect to be able to launch Classic in a third of the time it normally takes, according to MacTech magazine . What’s more, you can create an extension set especially tailored to the environment. ClassicBooster ensures that this set is always loaded when you launch Classic, and your normal extension set loads when you boot into Mac OS 9.
A seven day trial version is available from the Cogco Web site. The full version of ClassicBooster costs US$10.