United States
Das Keyboard
Austin-designed mechanical boards sold on Cherry switches and driver-free operation. Keycap sets and small parts like the footbar stay orderable from the manufacturer for old models.
Das Keyboard has shipped roughly the same full-size product for over a decade, which is unusual in this category and is most of the reason parts remain available. The line splits into a plain professional model and lit models with software; the names sit close together and the hardware does not.