Webizen
A simple add-on to Denizen for hosting web pages.
Builds: https://ci.citizensnpcs.co/job/Webizen/
Status
Not actively maintained beyond bare minimum, but should function fine.
Simple tutorial by BlackCoyote
This is a good example of usage, however tag documentation is out of date.
https://docs.google.com/document/d/11E1asJ92cpsTG1I8nUvFnfgv_duVgul8U1f2_59PBlA