Hello!
We can create needed software on our own SaaS platform. The program works on a remote cloud server, users connect to the server using client's application (much faster than any browser solution). The application is crossplatform (Windows, Mac, Linux, Android) and does not need installation, just run the file, enter login and password.
Please give more information and we will provide an example for you.
I can provide more information about our system.
Regards, Boris.