
Some sample sites made with XOOPS, 100% full responsive :
- The french XOOPS support with Tutorials : https://www.monxoops.fr/
- MDTests, a Swiss company : https://www.mdtests.ch/, a one page site (Read the news here)
- Geneva Association of Civil Protection Organisations (AGOPC) : https://www.agopc.ch/
Lot of XOOPS tutorials here,
including a very complete tutorial to understand the xSwatch4 theme, Understanding the xSwatch4 theme.