Platform's keyboard tray can fit most controllers (up to 88 keys). See here for some compatible keyboards.
As you can imagine, there are just too many keyboards out there nowadays for us to keep up with, so some may be missing from the list. This doesn't necessarily mean that they aren’t compatible!
For any keyboards not listed we recommend that you measure them or find their specific dimensions online to be sure. If the keyboard is under 53.25”(w) x 15”(d) x 5.375”(h) in size and lighter than 50 lbs., then it is good to go!
When checking your keyboard’s size, it is important to consider that equipment manufacturer size specifications may not include features such as rubber feet, encoders, knobs, or buttons. It is recommended to verify your equipment’s specifications to ensure a compatible fit.
If your keyboard is too big to fit on the tray, there are some potential workarounds you could consider! One option is to use your keyboard on the desktop and your other controllers and mouse on the tray. Another option is to buy Platform without the tray and use a separate square-shaped stand (such as this one or this rolling stand) underneath to hold the keyboard for you.