This is yet-another-CMS/application server.
A web-site is defined by a set templates, content (in both static files or a database), and page definitions that define how the template and content are to fit together.
Pages can then be generated ahead of time (so the resulting site is static), on demand, or somewhere in-between, with some pages served statically and some dynamically, depending on performance and other requirements.
Commercial Use
Modify
Distribute
Place Warranty
Use Patent Claims
Sub-License
Hold Liable
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.