If you use Linux you can run Zello using fantastic piece of software called WINE. Wine offers Windows compatibility layer on various platforms and generally works really well. There are a couple of issues that you should be aware of:
- Get the latest version of WINE (at least 1.1.16). Earlier releases might not work.
- Turn off alert sounds. To do that go to Tools > Options... Alerts tab and uncheck both checkboxes. If you don't do that, then after the first message received Zello becomes unstable and eventually crashes. We are working to have that fixed
- Global hotkeys (i.e F7 and Ctrl-F7) don't work. We don't know how to fix that yet so if you have a tip please let us know!
- Auto-away doesn't work -- triggers immediately.