validation

📋 React Hooks for form state management and validation (Web + React Native)

Data validation using Python type hints

String validation

The most powerful data validation library for JS

:100:Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving

structured outputs for llms

A Higher Order Component using react-redux to keep form state in a Redux store

Decorator-based property validation for classes.

A configuration as code language with rich validation and tooling.

✅ Painless Vue forms

The modular and type safe schema library for validating structural data 🤖

CakePHP: The Rapid Development Framework for PHP - Official Repository

For entering, formatting, and validating international telephone numbers. Available in vanilla JavaScript, or as React, Vue, Angular, and Svelte components.

🏁 High performance subscription-based form state management for React

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).

Simple, lightweight model-based validation for Vue.js

Runtime type system for IO decoding/encoding

The home of the CUE language! Validate and define text-based and dynamic configuration

An express.js middleware for validator.js.

[Go] Package of validators and sanitizers for strings, numerics, slices and structs

The most awesome validation engine ever created for PHP

A Swift framework for parsing, formatting and validating international phone numbers. Inspired by Google's libphonenumber.

The JSON Schema specification

An implementation of the JSON Schema specification for Python

The form framework for coding agents

A light-weight, flexible, and expressive statistical data testing library

🐊 Policy Controller for Kubernetes

AI-safe .env files: Schemas for agents, Secrets for humans.

☑️ JavaScript fluent validation library