You can make any website a webwrapper "desktop app" using Chrome/Chromium's "Create application shortcuts..." in its More Tools menu. It just opens the website without any browser chrome, and prompts you to create a desktop shortcut for it. For a while, this was what Slack was recommending to Windows users for a "native" application, and it is still what they recommend to Linux users (see the bottom of the page here: https://slack.com/getting-started).

https://support.google.com/chrome/answer/95710?hl=en