I’ve gathered links to Home Assistant integrations created by the Ukrainian community in this topic. Don’t forget to give the projects a star 
on GitHub.
HA Check Weather — integration informs about rain, checks whether the weather is favorable for walking and cycling;
HA LUN Misto Air — real-time air quality monitoring integration. Now the LUN monitors 12 regional centers of the country;
HA Yasno Outages — integration provides information about power outage graphs using the Yasno API. Support the cities of Kyiv and Dnipro;
Home Assistant Lviv PowerOff — integration of LvivOblEnergo power outage schedules based on EnergyUA data;
Ukraine Alarm — integration notifies about air alarm in Ukraine;
Nova Poshta — integration notifies when the parcel has arrived at the office or post office;
Smart MAIC — integration receives energy data and controls the Smart MAIC Wi-Fi meter;
Home Assistant Inverter Axpert King — integration for reading data from the Axpert King inverter (also known as Voltronic Axpert III) using the RS232-TCP gateway.
Home Assistant ELGAMA GAMA300 DLMS over TCPIP — integration for reading data from the ELGAMA GAMA300 counter (the GAMA100 counter has not been checked, but may also be supported) through the RS485-TCP gateway.
Ariston NET remotethermo — integration allows you to control Ariston smart boilers. The integration logs in to the Ariston website and receives/sends data to the boiler through it.