https://www.slant.co/options/2223/alternatives/~aws-cloud-9-alternatives
https://ide.goorm.io/
https://paiza.cloud/en/
https://codetasty.com/pricing
https://aws.amazon.com/education/awseducate/apply/
https://c9.io/announcement_edu
https://docs.aws.amazon.com/cloud9/latest/user-guide/setup-student.html?&trk=em_a131L000005ubMUQAY&trkCampaign=C9_Docs_User_Guide_Student_Setup&sc_channel=em&sc_campaign=AWS_Cloud9_Email&sc_medium=em_email1&sc_outcome=Product_Marketing&sc_content=AWS_Webpage