Google Classroom is free software, but not Open Source. Is it Ture?

amelia2020 wrote:

Google Classroom is free software, but not Open Source. Is it Ture?

To answer that question, you would need to know the definition of open-source software.

o·pen-source

adjective | computing

denoting software for which the original source code is made freely available and may be redistributed and modified.

Since Google Classroom does not have its source code made public and does not allow anyone to modify its source code and change up the software (except with written permission, of course), it is not open-source.