I used to love using Macintosh Common Lisp, which was a glorious Lisp development environment that originally compiled to native 68K code, and had full access to native APIs like QuickTime. On the PowerPC Mac, I used Connectix SpeedDoubler to dynamically translate MCL's compiled 68K code into PowerPC code. It worked surprisingly well, so we didn't have to hold our breath waiting for MCL's native PowerPC port.

https://en.wikipedia.org/wiki/Macintosh_Common_Lisp

Rosetta wasn't a thing yet, so Connectix (who also made the famous QuickCam) filled that gap years earlier.

https://en.wikipedia.org/wiki/Connectix

> Connectix Corporation was a software and hardware company that released innovative products that were either made obsolete as Apple Computer incorporated the ideas into system software, or were sold to other companies once they became popular.

SpeedDoubler and RAMDoubler were great, and actually kinda delivered on their promises. But what I really needed during the reign of System 7 was BootDoubler: software that made every other reboot instantaneous.