Laravel CORS
barryvdh

Adds CORS (Cross-Origin Resource Sharing) headers support in your Laravel application

Laravel GraphQL
Folkloreatelier

Facebook GraphQL for Laravel 5. It supports Relay, eloquent models, validation and GraphiQL.

Laravel Fractal
spatie

An easy to use Fractal wrapper built for Laravel and Lumen applications

ApiGuard
chrisbjr

A simple way of authenticating your RESTful APIs with API keys using Laravel

Dingo API
dingo

A RESTful API package for the Laravel and Lumen frameworks.