The Domain Access project is a group of lightweight modules that provide tools for running a group of affiliated sites from one Drupal installation and a single shared database. The module allows you to share users, content, and configurations across a group of sites such as:

- example.com
- one.example.com
- two.example.com
- my.example.com
- thisexample.com <-- can use any domain string
- example.com:3000 <-- treats non-standard ports as unique