# Integration with other services

- `tornado.auth` — Third-party login with OpenID and OAuth
  - Common protocols
  - Google
  - Facebook
  - Twitter
- `tornado.wsgi` — Interoperability with other Python frameworks and servers
- `tornado.platform.caresresolver` — Asynchronous DNS Resolver using C-Ares
- `tornado.platform.twisted` — Bridges between Twisted and Tornado
  - Twisted DNS resolver
- `tornado.platform.asyncio` — Bridge between `asyncio` and Tornado