In China, WeChat supports messaging, payments, as well as:
- Booking trains on the national railway
- Booking flights
- Booking hotels
- Paying all your bills
- Buying stuff
- Ordering food
- Renting a bike
- Getting a rideshare
- Seeing a doctor
- Donating to charities
- Investing
- Reading e-books
- Pretty much everything else
A lot of it is done through their HTML5 "mini-app" ecosystem but it's all under one everything app.