The OSA keycap profile is a relatively new keycap profile that was introduced by the American keyboard manufacturer, Signature Plastics. OSA stands for “Ortholinear Sculptured ABS” and is designed for use with ortholinear keyboards, which are keyboards that feature a grid-like layout of keys instead of a traditional staggered layout.

The OSA keycap profile features a sculpted design that follows the natural curvature of the fingers. The keycaps are sculpted with a slight concave shape that provides a comfortable typing experience and reduces finger strain and fatigue during long typing sessions.

OSA keycaps are compatible with Cherry MX-style switches and are made from high-quality ABS plastic, which is a durable and long-lasting material that resists wear and tear. They are available in a variety of colors and designs, allowing users to customize their keyboard according to their preferences.

One of the main advantages of OSA keycaps is their compatibility with ortholinear keyboards. The sculpted design is specifically tailored to the layout of ortholinear keyboards, providing a comfortable and ergonomic typing experience. This makes OSA keycaps a popular choice among users who prefer ortholinear keyboards.

Overall, the OSA keycap profile is a high-quality and ergonomic option for anyone looking to customize their ortholinear keyboard. They provide a comfortable and tactile typing experience, excellent durability, and a wide range of customization options.