While there are countless types of ergonomic keyboards, the most common are angled keyboards and split keyboards. Angled keyboards, commonly referred to as “Alice”-style keyboards in the world of the mechanical keyboard (named by TGR Alice), the alphanumeric keys are split down the middle, placing the two halves at an angle from each other while keeping the modifier keys (backspace, enter, shift, etc.) in their standard positions. The angle varies between keyboards, as do the number of keys, but the main constant of an Alice-style keyboard is that, although the halves are separated from each other, the keyboard itself is not divided. It has a case that all keys are held.

On the other hand, a standard split keyboard does the opposite: A standard split keyboard keep all the keys in their basic position (without new angles) and instead of cutting the entire keyboard in two, create two different halves that can be moved independently of each other. Some of these keyboards connect the two halves with a cable, while others connect them wirelessly. This usually allows the two halves to be angled, to sit far from each other, or for only one half to be used (usually for playing).

Apart from all this, there is also ortholinear keyboards. On a typical keyboard, the keys are staggered rather than aligned in a perfect grid. But on an ortholinear keyboard, the keys are aligned to this grid. Although it may be more difficult to type at first, it theoretically makes your fingers move more naturally, directly up and down to reach other keys instead of moving at an angle. There are both ergonomic and split ortholinear keyboards, and keyboards that use unusual vibration, such as the Naya Create.