Comment by pessimizer

If it were the same file, it wouldn't be a "knock-off." It would be something like Optifonts. Very frowned upon, but definitely not illegal. Also, the kerning is usually trash, there will be way too many nodes in the vectors, and things may be missing. Annoying to work with, but in the case of Optifonts, free (because they're long out of business.)

http://abfonts.freehostia.com/opti/

https://luc.devroye.org/fonts-27506.html