Postman - The Collaboration Platform for API Development
Parade - Easily create parallax scrolling animations on iOS
DreamFactory - DreamFactory is an API management platform used to generate, secure, document, and extend APIs.
Undesign - Free design tools and resources for your projects
AWS CloudTrail - AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you.
Tipsly - Tipsly.io is a french toolbox with more than 100 free tools.