The Marten library provides .NET developers with the ability to use the proven PostgreSQL database engine and its fantastic JSON support as a fully fledged document database. The Marten team believes that a document database has far reaching benefits for developer productivity over relational databases with or without an ORM tool.Marten also provides .NET developers with an ACID-compliant event store with user-defined projections against event streams.

Marten - Postgresql as a Document Database and Event Store for .Net Applications

Business Logic Toolkit is a set of components to simplify .NET application development. BLToolkit is provided as source code that you can use "as is" or customize for your applications. It is written in C# and compatible with .NET Framework 3.5 and 4.0. Source code location: <A HREF="http://code.google.com/p/bl-toolkit/" target="_blank">http://code.google.com/p/bl-toolkit/</A>

Business Logic Toolkit is a set of components to simplify .NET application development. BLToolkit is provided as source code that you can use "as is" or customize for your applications. It is written in C# and compatible with .NET Framework 3.5 and 4.0.

BL-Toolkit - Business Logic Toolkit for .NET

The main strength of Vici CoolStorage is the ease of use. Most ORM tools still require a lot of unneeded code to accomplish basic data persistence tasks, but Vici CoolStorage is designed to relieve the programmer from these tedious and error-prone tasks, making it very intuitive to use.
<ul>
	<li>Supports SQL Server 2000/2005, MySQL, SQLite, MS Access and VistaDB. Other custom providers can be added.</li>
	<li>Full support for MonoTouch (using SQLite)</li>
	<li>Session-less and context-free database access</li>
	<li>Any existing relational data model can be mapped to CoolStorage objects with minimal effort</li>
	<li>No code generator required. Mapping is done by creating simple classes.</li>
	<li>All relation types are supported: One-To-Many, Many-To-One and Many-To-Many</li>
	<li>Completely typed object model (no type casts required)</li>
	<li>Dirty tracking on the column level. Only changed fields are persisted to the database</li>
	<li>Full support for transactions, including ##TransactionScope##</li>
	<li>Nullable columns can be mapped to nullable fields or to a default value</li>
	<li>Delayed (lazy) loading of data to minimize database access. Configurable per field.</li>
	<li>Selective or automatic prefetching of all relation types for improved query performance</li>
	<li>Powerful and intuitive database-independent object query language</li>
	<li>Flexible event mechanism to intercept any event</li>
	<li>Identity (auto-increment) keys or sequences are supported for all database types</li>
	<li>Support for server and client generated Guid keys</li>
	<li>Objects can be mapped to different databases, even across object relations</li>
	<li>Paging of object collections (at server level)</li>
	<li>Extensive support for retrieving aggregate values on collections (count, sum, average, ...)</li>
	<li>Collections implement IBindingList so they can be used by controls (grids) as a data source</li>
	<li>Underlying database engine uses optimized and parameterized SQL queries. SQL injection is impossible</li>
	<li>Built specifically for .NET 2.0 and up, taking full advantage of generics and nullable types</li>
	<li>Raw SQL and/or stored procedures can be called on the underlying database without the need for a separate database connection</li>
	<li>Small footprint (less than 250 KB, including Vici Core)</li>
</ul>

The main strength of Vici CoolStorage is the ease of use. Most ORM tools still require a lot of unneeded code to accomplish basic data persistence tasks, but Vici CoolStorage is designed to relieve the programmer from these tedious and error-prone tasks, making it very intuitive to use.

Coolstorage - ORM library for .NET

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Marten - Postgresql as a Document Database and Event Store for .Net Applications

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Coolstorage - ORM library for .NET

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Marten - Postgresql as a Document Database and Event Store for .Net Applications

BL-Toolkit - Business Logic Toolkit for .NET

Coolstorage - ORM library for .NET

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