Protractor is an end-to-end test framework for Angular and AngularJS applications. Protractor runs tests against your application running in a real browser, interacting with it as a user would. This framework is highly supported by contributors from Google, the main leader behind AngularJS. This framework that is built on top of Selenium and is the most widely adopted framework, especially when testing Angular/AngularJS websites. In addition to many extensions and plugins that Protractor has for things such as visual testing and more, Protractor has a unique synchronization mechanism that can automatically execute the next step in your test the moment the webpage finishes pending tasks so you don’t have to worry about waiting for your test and web page to sync.
Another great thing about Protractor is its ability to support BDD and Cucumber scripting. If you’re leveraging BDD as part of your Angular/AngularJS website SDLC, then this framework should be a great fit for you.