I am looking for satellite imagery base maps to be used in my web application. I have been using Google satellite base maps, but they are very old. I need something which has frequent updates, weekly or monthly updates will work too. All I need is that it should be open source.
Seems like a hard ask for imagery that is updated weekly/monthly without a concurrent subscription to a supplier.
Maybe this will help: https://earthexplorer.usgs.gov/