Open Source C# Object-Relational Mapping (ORM) Software
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C# Object-Relational Mapping (ORM) Software
View 5658 business solutionsBrowse free open source C# Object-Relational Mapping (ORM) Software and projects below. Use the toggles on the left to filter open source C# Object-Relational Mapping (ORM) Software by OS, license, language, programming language, and project status.
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realm dotnet
Realm is a mobile database: a replacement for SQLite & ORMs
Realm is a fast, scalable alternative to SQLite with mobile to cloud data sync that makes building real-time, reactive mobile apps easy. Build data-rich apps without draining device resources with Realm's lazy loading and zero-copy architecture. The object-oriented data model lets developers work directly with native objects – no ORMs or DAOs are needed. Real-time mobile to cloud data sync makes it easy to build interactive features that keep data up-to-date across multiple devices, users, and the backend. Accelerate time-to-market with easy to learn, language-native APIs that simplify data access. Device Sync, backed by MongoDB Atlas, handles the most complex part of connecting your client to the backend with ease – guaranteeing an app that works as expected and syncs data reliably, every time. Build full mobile apps with ease. -
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FreeSql
.NET aot orm, VB.NET/C# orm, Mysql/PostgreSQL/SqlServer/Oracle orm
FreeSql is a robust ORM (Object Relational Mapper) for .NET that supports multiple databases like MySQL, PostgreSQL, SQLite, Oracle, and SQL Server. It provides advanced features such as automatic entity mapping, LINQ-style queries, caching, and database-first or code-first workflows. Designed for developers who want full control and performance without sacrificing productivity. -
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ServiceStack.OrmLite
Fast, Simple, Typed ORM for .NET
ServiceStack.OrmLite is a lightweight, high-performance Object-Relational Mapping (ORM) library for .NET. It simplifies data access by mapping .NET classes to database tables, enabling developers to perform CRUD operations with ease. -
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AutoMapper
A convention-based object-object mapper in .NET
A convention-based object-object mapper. 100% organic and gluten-free. Takes out all of the fuss of mapping one object to another. AutoMapper is a simple little library built to solve a deceptively complex problem, getting rid of code that mapped one object to another. This type of code is rather dreary and boring to write, so why not invent a tool to do it for us? First, install NuGet. Then, install AutoMapper from the package manager console. AutoMapper is an object-object mapper. Object-object mapping works by transforming an input object of one type into an output object of a different type. What makes AutoMapper interesting is that it provides some interesting conventions to take the dirty work out of figuring out how to map type A to type B. As long as type B follows AutoMapper’s established convention, almost zero configuration is needed to map two types. -
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SmartSql
SmartSql = MyBatis in C# + .NET Core+ Cache(Memory | Redis)
SmartSql is a lightweight, high-performance ORM for .NET inspired by MyBatis. It provides a hybrid approach that separates SQL from application code while supporting dynamic queries, mapping, and caching. With XML or annotation-based configuration, SmartSql is designed to balance control and productivity for .NET developers. -
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Dapper
A simple object mapper for .Net
Dapper is an open-source object-relational mapping (ORM) library for .NET and .NET Core applications. The library allows developers quickly and easily access data from databases without the need to write tedious code. Dapper allows you to execute raw SQL queries, map the results to objects, and execute stored procedures, among other things. It is available as a NuGet package. Dapper is lightweight and fast, making it an ideal choice for applications that require low latency and high performance. It is a simple yet powerful object mapping tool for any .NET language, such as C#, that enables developers to quickly and easily map query results from ADO.NET data readers to instances of business objects. It has excellent support for both asynchronous and synchronous database queries and batching multiple queries together into a single call. -
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Chloe
A lightweight and high-performance Object/Relational Mapping(ORM)
Chloe is a lightweight Object/Relational Mapping(ORM) library. The query interface is similar to LINQ. You can query data like LINQ and do any things(Join Query | Group Query | Aggregate Query | Insert | Batch Update | Batch Delete) by lambda with Chloe.ORM. Pay attention to splicing lambda expression trees by yourself, do not wrap your variables with ConstantExpression, otherwise, non-parameterized sql will be generated, and there is a risk of sql injection! If the entity does not explicitly specify any auto-increment columns and the primary key is of type Int16, Int32, or Int64, the default primary key is the auto-increment column. If it is not an auto-increment column, it needs to be marked with the attribute NonAutoIncrementAttribute. -
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EF Core
Object-database mapper for .NET
EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. Entity Framework Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations. EF Core works with many databases, including SQL Database (on-premises and Azure), SQLite, MySQL, PostgreSQL, and Azure Cosmos DB. To install EF Core, you install the package for the EF Core database provider(s) you want to target. This tutorial uses SQLite because it runs on all platforms that .NET Core supports. This application intentionally keeps things simple for clarity. Connection strings should not be stored in the code for production applications. You may also want to split each C# class into its own file. Query and manage relational data in a .NET Core app with an Object-Relational Mapper (O/RM). -
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RepoDB
A hybrid ORM library for .NET.
RepoDB is an open-source .NET ORM library that bridges the gaps of micro-ORMs and full-ORMs. It helps you simplify the switch-over of when to use the BASIC and ADVANCE operations during the development. Like with any other ORMs, RepoDB does provide the preliminary methods needed for your basic operations. The good thing is, it also does provide the operations that are needed to cater your edge-cases like 2nd-Layer Cache, Tracing, Repositories, Property Handlers, and Batch/Bulk Operations. If you are to use RepoDB, your development experience is as simple as opening a connection and calling the advanced operations with a very minimal code. It is the reason that makes this library the simplest ORM to use. When you do the bulk operations, the generated value of the identity columns will be set back to the data models, just right after your execution. It is an important use-case that is/may needed by you and/or most developers. -
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DbExtensions
Extensions methods for ADO.NET, CRUD and dynamic SQL components.
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CCM (C# Collections Mapper)
The CCM is a mini ORM, working with the database and C# collections
CCM is a solution for the data management layer in the combination of Sql Server with a C # application. In whole this is a strongly typed entity mapper projecting the application's business logics onto database tables using T-SQL stored procedures. CCM allows you to implement fairly complex data structures in your application, without bothering about difficult and tedious questions of data acquisition and conversion issue, allowing you to pay more attention to the develop of business logic and UI. There no need to worry about migrations, context, etc. At the same time, ORM completely relieves the developer from direct communicating with ADO - datasets, tables, rows, and other data aceess component, to track connections, commands or operate with adapters because ORM works at a higher level of data abstraction. At the same time you will be completely protected from memory leaks and free to create complexity application logic at the primary data level. -
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Data/Document WF
Data/Document Work Flow application
Data/Document Work Flow is a set of .NET C# libraries to build simple cross-platform information system: - DataWF.Common - collections, reflections, io and networks helpers - DataWF.Data - cross RDBMS ORM - DataWF.Gui - Xwt based desktop UI - DataWF.Data.Gui - Database desktop UI - DataWF.Module.Flow - Document work flow module - DataWF.Mudule.FlowGui - Configure, create, edit, send document throw the flow Sources: https://github.com/alexandrvslv/datawf -
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Extensible repository and context-per-request infrastrucuture for .NET projects using Entity Framework.
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Entity Framework Analyzer
Analyze an Entity Framework edmx file to identity mapping issues.
This app will read an Entity Framework edmx file (currently tested with V5 of EF) and show all of the stored procedures, the conceptual functions, and the mappings between the two. If there are any procedures or functions that are not mapped, those will be listed as well. This tool was built to identify mapping issues when using Entity Framework with existing stored procedures. -
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Entity Framework Sync
Multi-Client Synchronization for Entity Framework
Enables client/server applications to auto-sync loaded entites when changed in the database. Works with Entity Framework Model-first and Code-first approaches. -
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FFEntityFramework is an Object-Relational Mapping Framework (O-R Mapping / Object Persistence) for .NET with built-in features like Xml-Serialization, Model-View-Controller-Framework or UndoManagement ... All these Components use the same Meta-Base which can be definied via Attributes (Annotations) on your Business-Classes. Nevertheless differences between Xml- and Db-Serialization can be made via an enum MetaUsage (Database, Xml, Internal …). For Example you can define a Key-Column which is only used for Db-Serialization and excluded for Xml-Serialization. The same can be done with References, Delegations &c. A special Feature is that all Metadata can be read from a comfortable Object-Model (MetaLayer) for your own needs.
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HierarchyObjects is an ORM (object relational mapper) written in C#. It uses ADO.NET and OLEDB. It is capable of loading an entire hierarchy of unique objects, do joins, and other things you might expect from an ORM.
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Nvergent is a light weight extension library for NHibernate 3.2 or >. It provides a entity constructor DI extension point, DataAnnotations integration at the persistence layer, and an integrated web request profiler.
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Open Jungo
Open software persistence model
Open Jungo is a flexible entity persistence model that makes it easy to create object-centric components with minimal coding. Unlike most current entity frameworks, Jungo does not require developers to structure their code in any particular way or specify database structures. Open Jungo supports most major proprietary and open source databases as well as well as a built-in highly efficient zero-configuration object-oriented database systems. It requires no external dependencies and works with all current .Net and Mono frameworks. -
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The Tenor Framework is a set of utilities to improve development of web projects, although it can be used on desktop projects. The main goal is to simplify mapping relational tables to entities, in a simple and maintainable way.
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Yet Another Persistance System is a framework for object persistance in C# that stores wide class of C# objects into a relational database without a need for ANY REDUNDANT CODING, such as object-table maping, writing SQL commands etc.
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doPersistence
Data persistence with one line of code.
doPersistence is a C# dll that persists any object to any database. Will save directly to tables with dynamic Sql or it will map to stored procedures (store, load, delete, list). For single objects add a class attribute: [Persistable("Customer", "CustomerId", true)] public class Customer { ... For list objects, inherit from a generic list: public class CustomerList : PersistentList<Customer> Bulk storage is extremely fast with data pagination available on loads. ~10,000 objects/second. ~2,000 objects/second if loaded one row at a time. See website for example code. Or download zip file for working copy. -
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persism
Persism is a simple no nonsence ORM.
Persism is a wood simple, auto discovery, auto configuration, and convention over configuration ORM (Object Relational Mapping) library for Java and .NET.
