Postman - The Collaboration Platform for API Development
Aegis Authenticator - Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...
DreamFactory - DreamFactory is an API management platform used to generate, secure, document, and extend APIs.
Authy - Best rated Two-Factor Authentication smartphone app for consumers, simplest 2fa Rest API for developers and a strong authentication platform for the enterprise.
AWS CloudTrail - AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you.
OTP Auth - The app for calculating one-time-passwords on iPhone and iPad.