After testing out a bunch of similar platforms ZeroHeight for me is in the sweetspot between “simple to use“ and “powerful enough”.
A very good tool to quickly make available a beginning of Design System for all the teams
We've been using Zeroheight to manage our styleguide and help developers for about a year now. It greatly simplifies our designers' communication with developers (=styleguide) and gives our developers great confidence that their pull requests are spot on for UX.