A number of companies make switches that either mimic or try to improve on the Cherry MX switch functionality. Some gaming-keyboard switches, for example, have shorter actuation points to register your keypress action more quickly. Razer, for one, recently developed a hybrid "Mecha-Membrane" variety that uses mechanical means to activate a silicone dome switch. We've seen this used in the likes of the Ornata Chroma, as well as in the Cynosa Chroma and its underglow-laden twin, the Cynosa Chroma Pro. But we'd consider these spinoffs as opposed to true mechanicals. (Cooler Master and SteelSeries have offered similar "hybrid" switches.) Razer also offers true mechanical switches, known as Razer Green (tactile and clicky), Razer Orange (tactile and silent), and Razer Yellow (linear and silent). Here's where one vendor goes off the color rails: The Razer Greens are most similar to Cherry MX Blue switches, Razer Oranges are closest to Cherry MX Browns, while Razer Yellows are congruent to Cherry MX Reds. Razer key switches exhibit unique travel distances and actuation points, too: Greens and Oranges are 4mm deep and actuate at 1.9mm, and Yellows are 3.5mm deep and actuate at 1.2mm. You'll want to try these before you buy as they are a world of their own. Logitech's mechanical keyboards, on the other hand, have become increasingly popular for their homebrew Romer-G switches. These come in both Tactile and Linear flavors and are rated for a whopping 70 million keystrokes. Romer-G switches are outfitted with an actuation distance between that of the Cherry MX Reds and Silvers, and they require the same 45cN force to actuate. Furthermore, Logitech now posits GX Blue switches as an alternative to Cherry MX Blues. None of these has become quite as popular or as widespread as the Cherry MX switches, though, so for the most part they're not worth discussing in depth. If you come across a keyboard brand using an unfamiliar switch type, try to determine both its actuation force (explained above) and its actuation point (at which depth of the keypress what you type is registered). Compare these values with those of the Cherry switches, and you should get an idea of what you're in for. Trying them in person is also recommended; we've tried imitation Blue, Brown, and other switches, and noted some subtle and not-so-subtle differences in feel from the Cherry standard. One major, common maker of Cherry-like key switches is Kaihua Electronics, better known by its subsidiary brand, Kailh. Kailh switches are often used in lower-cost mechanical models, and indeed, if you yank a keycap off a late-model mechanical keyboard and don't see the word "Cherry" on the switch, "Kailh" is the next most likely branding you might see. One of the most unusual switches you can find is, in fact, a quintessential mechanical example. The buckling-spring switch was used in the now-legendary IBM Model M keyboards that made such an impact in the 1980s—some of which are still in use today. It can still be found in keyboards from Unicomp, the company that acquired the manufacturing rights to it. (The Unicomp Ultra Classic definitely lives up to its name.) Buckling-spring keyboards use a genuine spring to activate the switch; when it bends in the middle as you press it, it causes tactile and aural feedback (the latter from the spring hitting the sidewall of the switch enclosure). Keyboards using this style of switch are rare these days, but they're prized for their unparalleled typing capability and psychological satisfaction.