Alps switch is a old switch, began in 1983. Since, there are many redesigns and clones made by different companies, notably by Matias. [see Keyboard: Matias Mini Tactile Pro] ALPS switch was popularly used in Apple Extended Keyboard II, 1990 . For detail, see https://deskthority.net/wiki/Alps_SKCL/SKCM_series
The Matias mechanical key switch is used by Keyboardio model 1. See Keyboardio Review
Key Switch Topic
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