# Public Interface
The platform itself is made up of a simple UI and API.
All sites exist under a single domain (or subdomain), and make use of shared resources for requests.
The platform currently allows use of subdomains of a domain for free, or you can provide your own custom domain.
In the exmaple below, the free subdomains that sites can use is
For example for the site addshore-alpha.wiki.opencura.com (opens new window):
- Miscellaneous Tools