The link above is a recent hack from me that is built on top of Wikimaps
Warper, it allows you to browse and search georefenced maps.
It was built only for the need from my side to test out a frontend
framework for another project, so I currently have no plans on any major
additions to its current functionality. I might add a opacity slider like
the one I made for the warped-to-iframe tool.
Feel free to suggest features and report bugs, engagement increases the
chances that I will set aside time for the project.