Fluent NHibernate - Fluent mapping for model

•    CSharp

Fluent, XML-less, compile safe, automated, convention-based mappings for NHibernate. Fluent NHibernate offers an alternative to NHibernate's standard XML mapping files. Rather than writing XML documents, you write mappings in strongly typed C# code. This allows for easy refactoring, improved readability and more concise code.

ActiveRecord - ActiveRecord pattern for .NET

•    CSharp

The Castle ActiveRecord project is an implementation of the ActiveRecord pattern for .NET. The ActiveRecord pattern consists on instance properties representing a record in the database, instance methods acting on that specific record and static methods acting on all records. Castle ActiveRecord is built on top of NHibernate, but its attribute-based mapping free the developer of writing XML for database-to-object mapping, which is needed when using NHibernate directly.

Coolstorage - ORM library for .NET

•    CSharp

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.

nHydrate - Conceive, Model, Generate

•    CSharp

nHydrate is an object-relational mapping (ORM) solution for the Microsoft .NET platform providing a framework for a relational database to be mapped to .NET objects. It is designed to alleviate the software developers experience writing persistence domains. The model controls database generation, LINQ syntax, API, DAL, etc.

Database Objects - ORM in VB6

•    VB6

The DatabaseObjects library is an open source tool for mapping relation database systems (MySQL, SQL Server, Microsoft Access) to an object-oriented structure. The library can simplify the development and maintenance of small and large systems by providing a mechanism to consolidate business logic, maintain data integrity, increasing productivity and minimise errors.

SubSonic - Data access for .NET

•    CSharp

SubSonic is A Super High-fidelity Batman Utility Belt that works up your Data Access (using Linq in 3.0), throws in some much-needed utility functions, and generally speeds along your dev cycle.

BL-Toolkit - Business Logic Toolkit for .NET

•    CSharp

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.

Doctrine ORM - Object relational mapper for PHP

•    PHP

Object relational mapper (ORM) for PHP that sits on top of a powerful database abstraction layer (DBAL). One of its key features is the option to write database queries in a proprietary object oriented SQL dialect called Doctrine Query Language (DQL), inspired by Hibernates HQL. This provides developers with a powerful alternative to SQL that maintains flexibility without requiring unnecessary code duplication.

Qcodo - Code Less Do More

•    PHP

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.

pdoMap - ORM for PHP

•    PHP

pdoMap is a PHP ORM (object-relational mapping) framework. The main aim of this project is to provide to PHP developers a RAD framework and a new way of dealing with databases.

Hibernate - Relational Persistence for Java

•    Java

Hibernate facilitated the storage and retrieval of domain objects via Object/Relational Mapping. Today, Hibernate is a collection of related projects enabling developers to utilize POJO-style domain models in their applications in ways extending well beyond Object/Relational Mapping.

Outlet - object-to-relational mapping for PHP

•    PHP

Outlet differs from other orm solutions for php in that it provides transparent, unobtrusive persistence. It does not require your entity objects to implement any interfaces or extend some sort of base class. It is also very lightweight, only a handful of classes and tools.

RedBeanPHP - Easiest ORM layer for php

•    PHP

RedBeanPHP is an open source ORM (object relational mapping) tool for PHP. It focuses on simplicity and ease of use. What makes RedBean unique is that it creates your database schema on-the-fly. It scans your data and adjusts the column types to fit your object properties. If your models are stabilized you can freeze the database. This way RedBean is easy to develop with but is also extremely fast on production servers.

Propel - smart easy object persistance in PHP

•    PHP

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.

dORM - Automate SQL. Focus on business logic

•    PHP

dORM is a PHP 5 ORM (object relational mapper) library that seamlessly loads, saves and deletes PHP objects from and to a relational database. dORM requires a small XML file that maps classes to their respective database tables. currently, only MySQL was tested.

norm - Not Object-Relational Mapping

•    Java

Norm is a simple way to access a JDBC database, usually in one line of code. It purges your code of the complex mess that is Hibernate, JPA, and ORM. It is an extremely lightweight layer over JDBC. It gets rid of large amounts of boilerplate JDBC code.

OrmLite - A lightweight ORM for Java

•    Java

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.

Apache Cayenne - User-friendly Java ORM with tools

•    Java

Cayenne is a Java object relational mapping (ORM) framework. Cayenne seamlessly binds one or more database schemas directly to Java objects, managing atomic commit and rollbacks, SQL generation, joins, sequences, and more. With Cayenne's Remote Object Persistence, those Java objects can even be persisted out to clients via Web Services.

gorp - Go Relational Persistence - an ORM-ish library for Go

•    Go

As many of the maintainers have become busy with other projects, progress toward the ever-elusive v2 has slowed to the point that we're only occasionally making progress outside of merging pull requests. In the interest of continuing to release, I'd like to lean toward a more maintainable path forward.For the moment, I am releasing a v2 tag with the current feature set from master, as some of those features have been actively used and relied on by more than one project. Our next goal is to continue cleaning up the code base with non-breaking changes as much as possible, but if/when a breaking change is needed, we'll just release new versions. This allows us to continue development at whatever pace we're capable of, without delaying the release of features or refusing PRs.

TimeAssistant is a Test Driven Development application to manage time

Eye.Open TimeAssistant helps managing "resources" (notes, etc), tasks, projects and grouping (as set) everything. Is a Test Driven Development application that shows how to implement a layered architecture using a "LINQ ORM", in this case NHibernate, and WCF.