Propel is an open-source Object-Relational Mapping (ORM) for PHP5. It allows you to access your database using a set of objects, providing a simple API for storing and retrieving data. Propel uses PDO as an abstraction layer, and code generation to remove the burden of runtime introspection. Therefore Propel is fast. Propel implements all the key concepts of mature ORM layers: the ActiveRecord pattern, validators, behaviors, table inheritance, reverse engineering an existing database, nested sets, nested transactions, lazy loading, LOB, etc. Propel supports MySQL, PostgreSQL, SQLite, MSSQL, and Oracle.

Propel is an open-source Object-Relational Mapping (ORM) for PHP5. It allows you to access your database using a set of objects, providing a simple API for storing and retrieving data. Propel uses PDO as an abstraction layer, and code generation to remove the burden of runtime introspection. Therefore Propel is fast.

Propel - smart easy object persistance in PHP

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

MongoDB object modeling designed to work in an asynchronous environment. It provides a straight-forward, schema-based solution to modeling your application data and includes built-in type casting, validation, query building, business logic hooks and more, out of the box.

Mongoose - Elegant MongoDB object modeling for Node.js

The Qcodo Development Framework is an open-source PHP web application framework which builds an Object Relational Model (ORM), CRUD (Create, Retrieve, Update, Delete) UI pages, and AJAX hooks from an existing data model. It additionally includes a tightly-integrated HTML and JavaScript form toolkit which interfaces directly with the generated entities. It is a robust, comprehensive framework which can be utilized by small and large Web applications alike. The framework consists of three main components: the Code Generator, QForms (OOP generated stateful Ajax- or server-processed webform), QQuery (OOP based SQL Query builder) -- all of which can be used independently of each other. The Code Generator parses an existing Relational Database structure, and builds an ORM, as well as several remote interfaces (SOAP, AJAX) to the ORM. The ORM in Qcodo can be extended to provide user-maintained functionality (via object subclassing). QForms is a ASP.NET-inspired templating engine in which each form element is an object exposing its functionality and state via methods and attributes. Delo.si, the official website of <A HREF="http://www.delo.si/" target="_blank">Delo</A>, the major daily newspaper of Slovenia.

The Qcodo Development Framework is an open-source PHP web application framework which builds an Object Relational Model (ORM), CRUD (Create, Retrieve, Update, Delete) UI pages, and AJAX hooks from an existing data model. It additionally includes a tightly-integrated HTML and JavaScript form toolkit which interfaces directly with the generated entities. It is a robust, comprehensive framework which can be utilized by small and large Web applications alike.

Qcodo - Code Less Do More

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

Object Relational Mapping Lite (ORM Lite) provides some simple, lightweight functionality for persisting Java objects to SQL databases while avoiding the complexity and overhead of more standard ORM packages. 

OrmLite - A lightweight ORM for Java

 Package slowpoke is a simple key/value store written using Go's standard library only. Keys are stored in memory (with persistence), values stored on disk. Keys are stored in memory with persistence to disk. Values stored on disk only.

Slowpoke - Low-level key/value store in pure Go

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