RingCentral, as we are all familiar with, deals with different kinds of APIs that offer reliable VoIP calling, web meetings, faxes, and other features over cloud communication.
There are different technologies all around like Java, PHP, Python, and JavaScript, which can easily be integrated with RingCentral APIs. Even RingCentral has an official SDK for them. We can check them out here: https://github.com/ringcentral.