Unfortunately, doing TrueType hinting more-or-less requires FontLab. There are other alternatives that are being developed, but by and large FontLab remains the industry tool for building TT-hints. Part of this talk by Tal Leming (https://vimeo.com/album/3329572/video/123781570#t=457s) explains some of the interchange issues with TT-hint formats. Long story short, everyone has a slightly different hinting compiler, and they're all proprietary.
