Playwright enables reliable end-to-end testing for modern web apps.

Meticulous monitors your daily interactions with your application as you develop it

Jest is a delightful JavaScript Testing Framework with a focus on simplicity.

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.

Radically better observability stack

Hand-crafted lightweight Rest Client for testing APIs. Supports collections, environments, git collaboration and local storage.