OpenWebRX is a multi-user software defined radio server application. It is able to operate with many different SDRs (one at a time) and supports multiple simultaneous remote users. OpenWebRx is free and open-source software that has been developed over many years.

The OpenWebRX project is developed and maintained by Jakob Ketterl.

The PARC STEMLab uses a customized version of OpenWebRX called OpenWebRX+ authored by Marat Fayzullin. There actually are more than 140 forks of the original OpenWebRX software repository. OpenWebRX+ adds additional functions such as more decoders and some usability enhancements. Development is very active making OpenWebRX+ one of the most popular SDR server application. It is also free and open-source software.

One of the main advantages of both OpenWebRX and OpenWebRX+ is that nothing needs to be installed by their users. The client operates entirely in the user's web browser. This actually drove our decision to use OpenWebRX+. Being able to just go to the URL with a web browser without having to install or configure any software opens these assets up to the widest possible audience.

Using PARC's OpenWebRX+ installation  ⓘ  OpenWebRX+ Operation

"OpenWebRX+ A Better Online SDR Radio" by Marat Fayzullin:  🔗 OpenWebRX+
(This is a very detailed article on all aspects of OpenWebRX+)

Below is an image of the PARC OpenWebRX+ main display