String validation

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• Updated Sep 11, 2026
• JavaScript

Elegant iOS form builder in Swift

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• Updated Sep 12, 2024
• Swift

✅ Painless Vue forms

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• Updated Mar 4, 2026
• TypeScript

Do it like => validates :photos, attached: true, content_type: ['image/png', 'image/jpg', 'image/jpeg'], size: { less_than: 500.kilobytes }, limit: { min: 1, max: 3 }, aspect_ratio: :landscape, dimension: { width: { in: 800..1600 }

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• Updated Nov 7, 2026
• Ruby

[INACTIVE] Client Side Validation for AngularJS 1. (You should use version > 2 💥)

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• Updated Oct 30, 2020
• JavaScript

Valiktor is a type-safe, powerful and extensible fluent DSL to validate objects in Kotlin

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• Updated Dec 16, 2021
• Kotlin

Ember computed property based validations

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• Updated Oct 28, 2026
• JavaScript

Higher Order Component for Validating Forms in React

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• Updated May 8, 2019
• JavaScript

A simple JavaScript validation library that doesn't interfere

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• Updated Nov 11, 2021
• JavaScript

A gem/plugin for Rails 3, Rails 4, Rails 5, and Rails 6 that enables client-side validation using ActiveModel + HTML5 Form Validation

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• Updated Apr 29, 2025
• Ruby

Svelte Form Builder include various Input fields validated using ZOD + Superforms

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• Updated Dec 28, 2025
• Svelte

Validation mixin for Ruby objects

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• Updated Nov 9, 2026
• Ruby

Functional validations inspired by Ruby's ActiveModel

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• Updated May 9, 2025
• Clojure

Python implementation of Domain Notification Pattern

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• Updated Jul 18, 2026
• Python

@typeofweb/schema: Lightweight validator with 100% TypeScript support and sane coercion rules.

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• Updated Mar 5, 2023
• TypeScript

Validation frontend for models.

assertions validations lesscode

• Updated Jul 9, 2020
• Ruby

[MAINTAINERS WANTED] Built-in limit validations for your ActiveRecord model

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• Updated Jan 14, 2017
• Ruby

Custom validation error messages for sails model with i18n support

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• Updated Nov 13, 2018
• JavaScript

Declarative data validations.

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• Updated Jul 20, 2026
• JavaScript

Don't let your user be a victim of their own action

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• Updated Jun 22, 2016
• JavaScript