Postman - The Collaboration Platform for API Development

Mint - Free personal finance software to assist you to manage your money, financial planning, and budget planning tools. Achieve your financial goals with Mint.

Apiary - Collaborative design, instant API mock, generated documentation, integrated code samples, debugging and automated testing

Buffer - Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share them for you through the day.

Django REST framework - Django REST framework is a toolkit for building web APIs.

AddThis - AddThis free website tools include share buttons, targeting tools and content recommendations help you get more likes, shares and followers and keep them coming back.