Postman - The Collaboration Platform for API Development
NetShare - NetShare app allows users to share mobile data or Wi-Fi networks with other users by creating a secure Wi-Fi hotspot.
Apiary - Collaborative design, instant API mock, generated documentation, integrated code samples, debugging and automated testing
Samsung Accessory Service - Samsung Accessory Service app provides features through which users can connect their accessories to their mobile phones using a variety of different connectivity methods and environments.
Django REST framework - Django REST framework is a toolkit for building web APIs.
Samsung Flow - Android and Windows Apps.