exozyme provides a remote desktop service on port 3389. While you can use the exodesk web client as described in the quickstart guide, it has some limitations such as some keyboard shortcuts not being properly redirected to the remote desktop.
Fortunately, you can use any other RDP (remote desktop protocol) clients to access your exozyme desktop. These clients may provide better performance but require installing an app. With an RDP client, enter in the address exozy.me and connect! You can enable 16-bit color in your client if you have a slow connection.
FreeRDP
FreeRDP is a free and open source RDP client (hence the name) and usually provides the best experience and performance. You can install it on Linux using your distro's package manager or on other platforms from the FreeRDP website.
Once installed, run FreeRDP in a terminal with xfreerdp -v exozy.me --dynamic-resolution --sound --mic --rfx. These flags respectively specify the address, resizing the desktop upon a window resize, enabling sound and microphone integration, and using RemoteFX to boost performance. You can also add -u username -p password to the command to specify your exozyme username and password so you don't need to type it into the login window, but this saves your credentials to your shell history!
Microsoft clients
Microsoft has produced a number of proprietary RDP clients for various platforms including Windows, macOS, iOS, and Android. Windows also has a built-in client called Remote Desktop Connection. Mac users can use the Microsoft Remote Desktop Beta client. Check this list for clients for all platforms. These clients usually have worse performance and more bugs in the desktop session compared to FreeRDP.