We recently signed a huge deal with a big, very known vendor. I asked if they had a web interface to the software. Of course, they said, and gave us a link. I clicked the link and was asked to install java. Turns out the web version is just the desktop version wrapped in a Java applet. The applet didn't do well with openjdk, so they asked me to file a support ticket. They gave me another link. The service desk required shockwave flash.