feathers-hooks-common - Useful hooks for use with Feathersjs services.
formsy-react - A form input builder and validator for React JS
feathers-twilio - A Feathers service for talking to the Twilio API
mongoose-unique-validator is a plugin which adds pre-save validation for unique fields within a Mongoose schema.
async-validate - Asynchronous object validation
ajv - The fastest JSON schema Validator. Supports v5 proposals
meteor-autoform - AutoForm is a Meteor package that adds UI components and helpers to easily create basic forms with automatic insert and update events, and automatic reactive validation.
meteor-collection2 - A Meteor package that extends Mongo.Collection to provide support for specifying a schema and then validating against that schema when inserting and updating.