ajv - The fastest JSON Schema Validator. Supports draft-04/06/07

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The fastest JSON Schema validator for Node.js and browser. Supports draft-04/06/07.JSON Schema draft-07 is published.

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jQuery-Form-Validator - jQuery plugin that makes it easy to validate user input while keeping your HTML markup clean from javascript code

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jQuery Form Validator is a feature rich and multilingual jQuery plugin that makes it easy to validate user input while keeping your HTML markup clean from javascript code. Even though this plugin has a wide range of validation functions it's designed to require as little network traffic as possible. This is achieved by grouping together validation functions in "modules", making it possible to load only those functions that's needed to validate a particular form.

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validator.js - String validation

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A library of string validators and sanitizers. This library validates and sanitizes strings only.

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jsonschema - JSON Schema validation

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JSON schema validator, which is designed to be fast and simple to use. The latest IETF published draft is v6, this library is mostly v4 compatible. Please fork the repository, make the changes in your fork and include tests. Once you're done making changes, send in a pull request.

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asm.js - A low-level, extraordinarily optimizable subset of JavaScript.

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A Mozilla Research project to specify and develop the extremely optimizable subset of JS targeted by compilers like Emscripten, Mandreel, and LLJS. Discussion of the asm.js spec now takes place on Specifiction here.

asm.js validator

validatorjs - A data validation library in JavaScript for the browser and Node

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The validatorjs library makes data validation in JavaScript very easy in both the browser and Node.js. This library was inspired by the Laravel framework's Validator. To apply validation rules to the data object, use the same object key names for the rules object.

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superstruct - A simple and composable way to validate data in Javascript.

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A simple and composable way to validate data in JavaScript. Superstruct makes it easy to define interfaces and then validate JavaScript data against them. Its type annotation API was inspired by Typescript, Flow, Go, and GraphQL, giving it a familiar and easy to understand API.

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express-validator - An express.js middleware for node-validator.

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An express.js middleware for validator. Also please note that, starting with v5.0.0, no new features will be accepted into the legacy API. Only bug fixes will be made.

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js-xss - Sanitize untrusted HTML (to prevent XSS) with a configuration specified by a Whitelist

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Sanitize untrusted HTML (to prevent XSS) with a configuration specified by a Whitelist

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JSV - A JavaScript implementation of an extendable, fully compliant JSON Schema validator.

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A JSON validator is a program that takes JSON data and, with a provided schema, will ensure that the provided JSON is structured in the way defined by the schema. This ensures that if validation has passed, the JSON instance is guaranteed to be in the expected format. It will also provide an explanation on why a particular instance failed validation. There is no one way to validate JSON, just like there is no one way to validate XML. Even the JSON Schema specification has gone through several revisions which are not 100% backwards compatible with each other. To solve the issue of using numerous schemas already written to older specifications, JSV provides customizable environments to validate your JSON within.

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schema-inspector - Schema-Inspector is an JSON API sanitisation and validation module.

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Schema-Inspector is a powerful tool to sanitize and validate JS objects. It's designed to work both client-side and server-side and to be scalable with allowing asynchronous and synchronous calls.(Or download async.js and schema-inspector.js manually).

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W3C API Validator Client

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W3C API validator client library with source codes and sample application

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Open XML Validator

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This WPF app give you a brief resume about errors in your Open XML documents.

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Hyperlinked Validation System for WinForms

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A easy-to-use and powerful utility for form-input checks.

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TNValidate - A Fluent Validation Library for .NET

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TNValidate is a fluent validation library for .Net. It enables you to write validation logic in a way that somewhat resembles natural language. TNValidate comes with built in rules for different types of data, can generate errors in a couple of languages, and is extensible.

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Silverlight Validator & Input Toolkit

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Easy to use Silverlight based Validator toolkit for validating user input. Also includes input filtering and formatting options.

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Username Availability Validator

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The Username Availability Validator is an ASP.NET server control which provides asynchronous indication of username availability, for use in new user registration functionality.

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Silverlight InputControls

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The Silverlight Input Control is an open-source project built on top of the Microsoft Silverlight 3.0 and Silverlight 4.0, framework. It is a effort that provides powerful input controls (MaskedEdit / Validations / Attached Services) in Silverlight. It's developed in C# with .NET

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OOXML Validator

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Validates all types of OOXML-packages (docx, xlsx, pptx, etc) and presents clear information on the errors.

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Product Code Validator

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This project aims to facilitate the validation of product codes such as EANs (European Product Code), ASINs (Amazon Standard Identification Number) and ISBNs.

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