Google Classroom is a powerful educational platform you can use with your students to enhance their learning and create a collaborative learning space. You can even boost this collaborative learning experience by connecting your Classroom to third party add-ons. These are tools that will provide you with key functionalities that might not be available in Google Classroom. For instance, there are apps that helps you auto-create and auto-syncs class rosters from student information exports (e.g., Little SIS), apps to create music notation and composition assignments (e.g., Flat), apps to assign Quizizz games to students (e.g., Quizzizz), apps for detecting plagiarism in students works (e., Unicheck) and many more. Below is a visual that includes some of our favourite apps to integrate with Google Classroom based on this resource from Google for Education. Have a look and share with us your feedback. For links to the apps, check out this page.
This visual is also available in PDF format from this page. Enjoy