Ems is a website builder initially developed as a Mathematica port of the pelican static site builder
The easiest way to install Ems is using a paclet server installation:
PacletInstall[
"Ems",
"Site"->
"http://www.wolframcloud.com/objects/b3m2a1.paclets/PacletServer"
]If you've already installed it you can update using:
PacletUpdate[
"Ems",
"Site"->
"http://www.wolframcloud.com/objects/b3m2a1.paclets/PacletServer"
]Alternately you can download this repo as a ZIP file and put extract it in $UserBaseDirectory/Applications
Here are a few screenshots of example sites that were built with Ems.
Most themes are based on Bootstrap and are very customizable
Examples and usages can be found on the Wiki