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uMap let you create maps with OpenStreetMap layers in a minute and embed them in your site.
TravelMap is a blogging platform that lets travellers create their blog centered on a one-page interactive map. It was founded in January 2014 by Clément Mas... read more.
You can try TravelMap: https://travelmap.net it's intended for travelers but you can easily add spots on a map and share it.