The most powerful data validation library for JS
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Updated
Nov 19, 2025 - JavaScript
The most powerful data validation library for JS
Build production-ready applications in TypeScript
🔮 Graphile's Crystal Monorepo; home to Grafast, PostGraphile, pg-introspection, pg-sql2 and much more!
A tool for generating code based on a GraphQL schema and GraphQL operations (query/mutation/subscription), with flexible support for custom plugins.
A database migration tool. Supports SQL migrations and Go functions.
The modular and type safe schema library for validating structural data 🤖
Create GraphQL schema and resolvers with TypeScript, using classes and decorators!
A lightweight library for converting complex objects to and from simple Python datatypes.
A simple and composable way to validate data in JavaScript (and TypeScript).
PostgreSQL zero-downtime migrations made easy
An implementation of the JSON Schema specification for Python
Mimesis is a fast Python library for generating fake data in multiple languages.
A light-weight, flexible, and expressive statistical data testing library
Versioned database views for Rails
A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and TOML
Database documentation built easy
A standard interface for TypeScript schema validation libraries
Modern Data Layer for TypeScript Apps - type-safe ORM, built-in access control, automatic query services
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