Radmon.org is described as 'A free worldwide radiation monitoring website. It is a place for experimenters, enthusiats and background radiation monitoring' and is a Map service in the online services category. There are 2 alternatives to Radmon.org, not only websites but also apps for. The best Radmon.org alternative is Geiger Counter World Map, which is both free and Open Source.
It is developed by GQ Electronics. Its devices (e.g., geiger counters) are fully compatible with the website and it is very easy to track and upload data of the levels of (ionizing) radiation, including radon.
Geiger Counter World Map is the most popular Web-based alternative to Radmon.org.
Geiger Counter World Map is the most popular Open Source & free alternative to Radmon.org.
Safecast is an international volunteer driven non-profit organization whose goal is to create useful, accessible, and granular environmental data including ionizing radiation. All Safecast data is published, free of charge, into the public domain under a CC0 designation.
United States