kotlin-orm/ktorm

Health v2 · maintenance only

Adoption not part of the score

2343 stars · 161 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Ktorm is a lightweight ORM framework for Kotlin built directly on pure JDBC, offering a strong-typed SQL DSL and entity sequence APIs. It requires no configuration files, XML, or annotations, and generates SQL automatically with fine-grained control.

Use cases

• write type-safe SQL queries in Kotlin without XML or annotations
• replace MyBatis with a Kotlin-native ORM
• query databases using Kotlin collection-style sequence APIs
• map database tables to Kotlin entities with minimal boilerplate
• add database dialect support for MySQL, PostgreSQL, Oracle, SQLite, or SQL Server
• catch SQL bugs at compile time with a strong-typed DSL

When to choose

• you're building a Kotlin/JVM application that talks to a relational database
• you want compile-time safety for SQL without annotations or codegen-heavy frameworks
• you prefer lightweight libraries with no third-party dependencies
• you want query code that reads like Kotlin's native collection APIs

When to avoid

• you need a full-featured ORM with lazy loading, caching, and complex relationship management like Hibernate
• your team works primarily in Java rather than Kotlin
• you rely on JPA annotations and existing JPA entity mappings
• you need multi-tenant or advanced ORM features beyond Ktorm's scope

Facets

library · maturity active

orm database database-driver serialization databases backend web-development developer-tools jvm cross-platform kotlin sql-dsl jdbc entity-sequence type-safe-queries no-annotations

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