Apps similar to Modest Maps include OpenStreetMap, which is free and open source. Other options are Google Maps, OsmAnd, Google Earth and HERE WeGo. There's no shortage of Map Services like Modest Maps, with more than 50 alternatives for the web, Android, iPhone, iPad and Windows.
MapSphere is a manageable way to view and organize geographical data of different kind. This might be raster maps and satellite imagery from various sources, your own information received from GPS, tracks of your friends, whatever you want.
Earth View is a collection of the most beautiful and striking landscapes found in Google Earth.
Explore developer resources and start building your own applications using Planet's data and tools. Transform daily satellite imagery into intelligent analytic feeds to index objects and change.
Provides editable vector maps in SVG, PNG, and PDF formats under the Creative Commons Attribution 4.0 International License.
Universal Maps Downloader is a tool that help you to get small tile images from online maps:
