Hi everyone, I'm Hamish, PM for KartProject here. If you want to learn more about Kart:
* Our CTO Rob Coup presenting on Kart at FOSS4G 23: https://www.youtube.com/watch?v=1B-HB2Z3Vlc
* Docs are available at https://docs.kartproject.org/en/latest/
* We also have a QGIS plugin! This gives you visual diffs of vector feature changes. https://plugins.qgis.org/plugins/kart/
Happy to answer any questions!