DotSpatial for NetStandard 2.0 is subpart of DotSpatial that is a GIS toolset originally written for .Net Framework Caution - DotSpatial.Serialization and DotSpatial.Positioning uses System.Drawing so they does not work on Android/iOS

It's MIT. The original DotSpatial (dotspatial.codeplex.com) was released under the LGPL, the new version hosted on GitHub is released under the MIT license.

You can download the latest stable release via NuGet.