uMap let you create maps with OpenStreetMap layers in a minute and embed them in your site.
Google My Maps Alternatives
SaaSHub's Down Detector checks the status of services automatically and regularly. However, we cannot promise 100% accuracy. That is why we depend on user reported issues as well. The Google My Maps status here can help you determine if there is a global outage and Google My Maps is down for everyone or it is just you that is experiencing problems. Please always report any issues to help others know the current status.