EchoLink has a web browser version

Most folks are familiar with EchoLink. Its been around as a Amateur Radio PC application along with both IPhone and Android apps for many years.

EchoLink® software allows licensed Amateur Radio stations to communicate with one another over the Internet, using streaming-audio technology.  The program allows worldwide connections to be made between stations, or from computer to station, greatly enhancing Amateur Radio's communications capabilities.  There are more than 350,000 validated users worldwide — in 159 of the world's 193 nations — with about 6,000 online at any given time.

What is EchoLink Web?

EchoLink Web is an edition of EchoLink that runs entirely within a Web browser. It runs on various browsers and OS platforms and doesn't require any app to be installed — just click and go.

Learn more here: https://www.echolink.org/faq_webapp.htm