ESP32 Port - RTurala/Sonoff-Tasmota GitHub Wiki
The original ESP32 port is here: JacekDob/Sonoff-Tasmota
Because tasmota seems to have broken github's network page, it's very difficult to find forks now. So if you have a significant fork of JacekDob, note it here if you think it will be useful.
e.g.
btsimonh/Sonoff-Tasmota - branch builds in platform.io on 2018-11-04