xtensive 

DataObjects.Net is the object-relational mapper (ORM) and business logic layer (BLL) framework

Adds support for PostgreSQL for DataObjects.Net

Adds support for MySQL for DataObjects.Net

Adds support for Oracle for DataObjects.Net. Requires ODP.NET to be installed.

Adds support for SQLite for DataObjects.Net

Adds support for Firebird for DataObjects.Net

Adds support for bulk insert, update and delete operations for DataObjects.Net-powered domain models

Adds security layer for DataObjects.Net-powered projects

Adds support for SQL Server CE 3.5 for DataObjects.Net

Adds tracking functionality for DataObjects.Net-powered projects

Adds support for logging via log4net for DataObjects.Net

Adds support for easy localization for DataObjects.Net-powered domain models

Adds integration with ASP.NET for DataObjects.Net-powered projects

Adds support for reprocessable operations for DataObjects.Net-powered projects

Adds DataObjects.Net configuration template and configuration file schema

Adds support for logging via NLog for DataObjects.Net

Adds support for logging via log4net for DataObjects.Net