Data Validation

Over 125,000 users trust NeverBounce for their real-time email verification and advanced email list cleaning & scrubbing services.

Easy and effective email validation service. 98% accuracy, 24/7 customer support. Verify 100 email addresses for free – every month! Start trial today.

Validate.js provides a declarative way of validating javascript objects. It is unit tested with 100% code coverage and can be considered fit for production.

Simple, lightweight model-based validation for Vue.js

A global phone validator and verificator service covering 240+ countries with carrier and line type lookup.

Verifybee finds and verifies email addresses, phone numbers & social media accounts for professionals.

Lob provides direct mail and address verification APIs that allow businesses to send timely, personalized, automated offline communications to their customers.

Abstract provides powerful APIs to help you enrich any user experience or automate any workflow. Used by 10,000+ developers worldwide.

Say goodbye to crowded, inaccurate email lists. Emailable is an email verification SaaS designed for bulk validation.

Parsley, the ultimate frontend javascript form validation library

The best validation library for JavaScript. No dependency. Supports popular frameworks including Bootstrap, Zurb Foundation, Pure, Semantic, UIKit, Bulma, spectre, Shoelace