Waze is google.

Osmand can do that easily. You can even copy coordinates.

Magic earth can do it as well but it's not open source. At least it uses osm.

Organic Maps. just long press the address of the POI.

The problem with OSM & Organic maps is that searching/finding an address is a completely alien process to majority of users. Find by intersection? whaaat?!

You can copy addresses with OsmAnd+. They have options to include GeoCoords with, too.

https://f-droid.org/packages/net.osmand.plus/

There is a version on the Google Play store which has voice prompts for navigation, which this F-Droid version doesn't.

Osmand?

You can copy addresses in GMaps.

Touch and hold the address in a place "card" or whatever the fuck Google calls it now.

Yes, I despise what they've done to it. Used to be able to simply add a location to your contacts directly from maps (it would actually copy everying - business name, address, phone number, etc).

Guess that wasn't collecting enough info from us.