Philosophy

The core design philosophy behind each ORM, including how tightly it's bound to a framework's own conventions.

Active Record (Ruby on Rails)

Not a separate library but Rails’ own built-in ORM, deliberately inseparable from Rails’ “convention over configuration” philosophy — table names, foreign keys, and validations all follow predictable naming conventions with minimal explicit configuration.

Eloquent (Laravel)

Laravel’s built-in ORM, following the same Active Record pattern as Rails and just as tightly woven into Laravel’s philosophy of expressive, developer-friendly syntax over raw performance or strict architectural layering.

Django ORM

Django’s built-in ORM, reflecting Django’s “batteries included” philosophy — models, migrations, the admin site, and forms are all designed to work together as one cohesive system rather than being swappable pieces.

Prisma

A standalone, schema-first ORM built around the idea that the database schema should be the single source of truth, generating a fully type-safe client from it rather than inferring types from hand-written classes.

Drizzle

A standalone, code-first TypeScript ORM built around staying as close to SQL as possible — its philosophy is that the ORM should “think with you,” not abstract SQL away entirely the way Prisma does.

TypeORM

A standalone TypeScript ORM inspired by Hibernate and other mature Data Mapper-style ORMs from statically-typed languages, aiming to bring decorator-based entity classes to the Node.js ecosystem.

Sequelize

One of the original standalone Node.js ORMs, predating TypeScript-first tools like Prisma and Drizzle, built around a promise-based API over a wide range of SQL databases.

SQLAlchemy

A standalone Python ORM (usable with Flask, FastAPI, or no framework at all) explicitly designed around the Data Mapper pattern, deliberately keeping the database layer decoupled from domain objects for maximum flexibility.

Entity Framework Core

Microsoft’s official standalone ORM for .NET, philosophically similar to SQLAlchemy in decoupling entities from persistence, while integrating tightly with the wider .NET/LINQ ecosystem.

Hibernate (JPA)

The original mature Data Mapper ORM for Java, built around the JPA (Java Persistence API) specification, prioritizing a rigorous, enterprise-grade object-relational mapping layer.

GORM

Go’s most popular ORM, philosophically simpler and more pragmatic than Hibernate or Entity Framework Core, reflecting Go’s overall preference for straightforward, explicit code over heavy abstraction.

Diesel

Rust’s most established ORM, prioritizing compile-time safety above all else — most query mistakes are caught by the Rust compiler before the program ever runs, in keeping with Rust’s broader safety-first philosophy.