Mockoon is the easiest and quickest way to design and run mock REST APIs.

Burp or Burp Suite is a set of tools used for penetration testing of web applications. It is developed by a company named Portswigger who make freely available a Web Security Academy which has a range of lessons on penetration testing.

Hosted System Status Pages Fully customizable, featuring incident tracking, subscriber notifications, and much more

Build trust with every incident Easily communicate real-time status to your users, just like DigitalOcean and Dropbox.

Puppeteer is a Node.js library which provides a high-level API to control Chrome/Chromium over the DevTools Protocol.

Unifying API testing, API Performance testing, API Mocks and UI testing.