ufoLib2 is meant to be a thin representation of the Unified Font Object (UFO) version 3 data model, intended for programmatic manipulation and fast batch processing of UFOs.
It resembles the defcon library, but does without notifications, the layout engine and other support classes. Where useful and possible, ufoLib2 tries to be API-compatible with defcon.
It does not replace fontTools.ufoLib but builds on it. The eventual goal is to merge it into fontTools.ufoLib.objects.
Documentation: https://ufolib2.readthedocs.io/en/latest/