VeeValidate is the most popular Vue.js form library, designed to handle value tracking, validation, errors, and form submissions.

The main features of this library include:

• Dual API Support: Offers both declarative components and a composable functions API (Composition API), allowing developers to build forms in their preferred style.

• Incremental Adoption: Allows you to opt-in or out of specific aspects—such as value tracking, validation, or submission handling—giving you total control over how much form code you write.

• Flexible Validation Capabilities: Supports both form-level and field-level validation, array fields, async validators, and backend API errors.

• UI Agnostic: Works seamlessly with your favorite UI frameworks and component libraries.

• Great Developer Experience (DX): Integrates directly with Vue Devtools to make debugging forms easier whenever a submission fails.

• State-Store Friendly & Higher-Order Components: Provides higher-order components, state-store compatibility, and flexible validator APIs to handle complex form workflows in just a few lines of code.