http://www.guru99.com/api-testing.html

Write API Tests with Postman and Newman https://scotch.io/tutorials/write-api-tests-with-postman-and-newman?

• Fuzzapi Fuzzapi is a tool used for REST API pentesting and uses API_Fuzzer gem

Web-Services Testing Made Simple karate https://github.com/intuit/karate

3 FREE API Security Test Tools https://www.joecolantonio.com/2016/07/19/3-free-api-security-tools/

http://wiremock.org/

https://www.npmjs.com/package/loopback-api-testing

• JSONPlaceholder - Fake Online REST API for Testing and Prototyping

http://dareid.github.io/chakram/

• Test Cases for API Testing
• Best Practices For API Testing
• API testing best practices