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I usually receive addresses from people to use map(No addresses on net)which must be highest resolution, I often don't know where somewhere unplanned is.
Just an image is fine but better if it is:
zoomable
usable on Android
software with search, directions, and placemarking
satellite view
Google Maps and other apps only download one resolution.
I have a Linux machine, but I'll install Windows if needed.
What will work for you is Maverick (or Maverick Pro) for viewing the map, and Mobile Atlas Creator for generating/downloading the offline map, which you then upload to your Android device to use with Maverick. Also, all tiles viewed in Maverick are cached, so just browsing the area online with Maverick will allow you to see it offline - limited to how much you viewed online (no such limit for Atlas Creator; you just mark a square, set max zoom level, and it grabs all the tiles up to that zoom level.)
As for other features, all are present while online. Placemarking and simple direction (straight line) will work when offline too, but search and driving directions require network connectivity. I don't think any online service allows dumping their search database for offline use, and while offline map applications (e.g. for dedicated car GPS devices) contain searchable POI, they don't have satellite view.
I use Osmand Maps for Android, after investigating several offline mapping programs for Android.
The interface takes some getting used to; it's not the most intuitive so you have a learning curve. The maps are based on OpenStreetMap data, they are available for most places as far as I can see, and their quality is decent. They are not as accurate as Google maps. Example: I was in Barcelona last March and the software could find the street fine, but not exactly the house number. That's a a minor annoyance when you're driving and take a left turn where you need a right one.
It is free for up to 10 map downloads (maps change regularly, you decide when to update), otherwise $6.95.
Three caveats:
I have not had enough experience with its turn-by-turn directions with voice guidance to actually rate this. It seems to work.
As with any other GPS based navigation software, quality of directions depends on the quality of the received GPS signals and the speed with which you are moving. For a pedestrian in a city, expect temporarily unclear directions.
No satellite view
(Added) O yes, one big plus: I asks ony for the permissions it needs.
