Top 20 NuGet data Packages

Object-document mapper between TrackableData and MongoDB.
IDatabaseContextCache implementation for use in HTTP scenarios.
Entity Framework provider for LightDataInterface.
The fastest, most accurate tools. Deployed by millions. Request.Browser properties will be populated with data from 51Degrees Lite Device Data. Other features include automatic image optimisation, monitoring of network conditions and client side feature detection.
Reinforced.Lattice quick start bundle package for ASP.NET MVC 4. Includes everything - from core library to default template in single package
Reinforced.Lattice quick start bundle package for ASP.NET MVC 5. Includes everything - from core library to default template in single package
Reinforced.Lattice integration assembly for ASP.NET MVC 4
Provides the data context and the associated commands for in-memory data store.
Azure.Data.Wrappers Class Library
Simple Data Accesss Layer for EntityFramework with some helpfull features. There is a ReadableReposity and WritableRepository. PagedList collection and mapping to entities to ViewModels.
EntityFrameworkCore.FirebirdSql is an ORM, created at the top of the Firebird ADO.NET (FirebirdSql.Data.FirebirdClient) Data Provider. It allows you to use Entity Framework Core 2.0 as an extension, to access Firebird (2.x, 3.x, 4.x)
OData service library - Uses Web API OData to implement a default OData API for an EF DbContext. Can be customized using normal Web API extension points.
Extensions for the Dapper micro ORM.
Provides data access implementation using Microsoft Entity Framework.
https://github.com/Dixin/EnterpriseLibrary.TransientFaultHandling.Core
Spreads Core library
Provides extensions to use KBCsv with types in System.Data. Online at https://github.com/kentcb/KBCsv.
Simple, flexible, interactive and powerful data visualization for WinForms
Data transformation and anaytics library - Sql Connections and readers for Sql Server, Sqlite, PostgreSql & MySql
Handle database errors easily when working with Entity Framework Core. Catch specific exceptions such as UniqueConstraintException, CannotInsertNullException, MaxLengthExceededException, NumericOverflowException or ReferenceConstraintException instead of generic DbUpdateException