Union

Russian-speaking people who live abroad buy, sell and rent through local Telegram chats: a flea market in Batumi, a rentals chat in Belgrade, a services group in Dubai. There are hundreds of them, and a listing gets buried within hours.

Union reads hundreds of open chats and puts their listings into one feed by city, with full-text search. That is tens of thousands of new listings every month in more than a hundred cities: furniture, electronics, kids' things, rentals, services.

Union works as a Telegram mini app and as a website. Posting is free; bumping and pinning a listing are paid with Telegram Stars. The interface is in Russian.