* [React Hook Form v7.86.0](https://github.com/react-hook-form/react-hook-form) – Library for managing form state and validation using React Hooks.

* [International Telephone Input v29.2.0](https://github.com/jackocnr/intl-tel-input) – JavaScript plugin for entering and validating international telephone numbers with features like country detection and number formatting.

* [conform v1.21.0](https://github.com/edmundhung/conform) – Type-safe form validation library that enhances HTML Forms with support for server frameworks.

* [env-schema v8.0.0](https://github.com/fastify/env-schema) – JSON schema–based environment variable validator with Ajv, supporting optional loading from .env files via Node.js parseEnv.

* [MobX React Form v6.19.0](https://github.com/foxhound87/mobx-react-form) – Reactive form state management library based on MobX.

* [installed-check v11.0.0](https://github.com/voxpelli/node-installed-check) – Verifies installed modules comply with package.json version, peer dependency and engine ranges, including workspace and parent-workspace checks.

* [joi v18.2.5](https://github.com/hapijs/joi) – Schema description language and data validator for JavaScript.

* [Valgo v0.9.0](https://github.com/cohesivestack/valgo) – Type-safe, extensible validator library for Golang with generics and localization support.

* [Runtypes v7.0.5](https://github.com/runtypes/runtypes) – Runtime validation library for TypeScript types, providing composable validators for primitives, literals, arrays, tuples, objects, unions, and intersections.

* [GoValidator v2.3.0](https://github.com/rezakhademix/govalidator) – Type-safe Golang validator that sanitizes and validates data without struct tags, type assertions, or reflection.

* [ozzo-validation v4.4.1](https://github.com/go-ozzo/ozzo-validation) – Configurable Go validation package that defines rules with normal language constructs and produces customizable validation errors across common and custom data types.

* [Papr v17.1.1](https://github.com/plexinc/papr) – Lightweight TypeScript library providing MongoDB JSON Schema-based models and runtime validation.

* [formsy-react v2.4.6](https://github.com/formsy/formsy-react) – Form input builder and validator for React.

* [Formkit - Primevue v4.3.3](https://github.com/sfxcode/formkit-primevue) – PrimeVue-based FormKit inputs and outputs for configuration-driven forms with validation.

* [JSON Schema Validator for Go v0.9.7](https://github.com/kaptinlin/jsonschema) – High-performance Go JSON Schema Draft 2020-12 validator with direct struct validation, smart unmarshaling, defaults, multi-language errors, and a separated validation workflow.