Top 20 NuGet geo Packages

Google Places, Maps, Roads, Search and Translate. Requests and Responses are complete with Google api documentation and references.
Mapsui - Library for mapping
Provides an IANA time zone identifier from latitude and longitude coordinates.
High performance and availability, scalable and very flexible pure .NET database. Using VelocityDB saves time and money for all software requiring reliable, high performance data persistence. Any .NET object can be efficiently persisted and retrieved within ACID transactional scope. The use of Veloc...
.Net types for the GeoJSON RFC to be used with Json.Net
Provides GeoJSON.Net Converters from / to the MS SQL Spatial types.
Provides GeoJSON.Net Converters from / to the EntityFramework Spatial types.
BruTile is a C# library for GIS tile services such as those of Bing maps and OpenStreetMap
Highly optimised GeoIp plugin for AspNetCore.PluginManager
Highly optimised localization plugin for AspNetCore.PluginManager
Provides a easy-to-use interface for quering data in CEPAberto (http://www.cepaberto.com) API. Needs a API key (free after registration) to work. Find postal code, geocoordinates and city information about a postal code or a latitude/longitude data
Highly optimised GeoIp plugin for AspNetCore.PluginManager
A geospatial library for .NET
Provides GeoJSON.Net Converters from / to Wkb binary format.
Geospatial search for the Lucene.Net full-text search engine library from The Apache Software Foundation.
GMap.NET Windows Forms & Presentation is an excellent open source, powerful, free and cross-platform .NET control. Allows the use of routing, geocoding, directions and maps from Google, Yahoo!, Bing, OpenStreetMap, ArcGIS, Pergo, SigPac, Yendux, Mapy.cz, Maps.lt, iKarte.lv, NearMap, HereMap, CloudMa...
Provides latitude and longitude coordinates from ZIP codes (50 states + DC) and more. Light-weight assembly. No dependencies.
Extensions to VelocityDB for efficient LINQ index/BTree queries, AzureSession file API usage with Microsoft Azure, import/export to/from CSV and JSON, Sync, GeoHash, Compressed Bitmap and RTree.
GMap.NET Windows Forms & Presentation is an excellent open source, powerful, free and cross-platform .NET control. Allows the use of routing, geocoding, directions and maps from Google, Yahoo!, Bing, OpenStreetMap, ArcGIS, Pergo, SigPac, Yendux, Mapy.cz, Maps.lt, iKarte.lv, NearMap, HereMap, CloudMa...
This library wraps Google maps API. You can easily query Google maps for Geocoding, Directions, Elevation, and Places. You can easily show the results on a Static Google Map! This Library is well documented and easy to use.