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Sail Internet
Sail Internet is a Santa Clara-based internet service provider that uses a hybrid of fiber and fixed-wireless technology to deliver high-speed, no-contract broadband to homes and businesses across the San Francisco Bay Area and Silicon Valley. Founded in 2015 by Stanford-trained broadband engineers, the company positions itself as a customer-first, net-neutral alternative to incumbent cable and telecom giants, reaching residences, multi-dwelling communities, and enterprises with gigabit-class connectivity that skips costly trench-and-dig infrastructure.
Sonic
Sonic is the largest independently owned internet service provider in California, founded in 1994 in Santa Rosa. It builds and runs its own fiber-optic network, selling fast, flat-priced gigabit and 10-gigabit home and business internet with no contracts, no data caps, and a privacy stance that has earned it a perfect score from the Electronic Frontier Foundation. After more than 30 years serving the San Francisco Bay Area, Sonic began its first out-of-region expansion in 2026, lighting up fiber in Los Angeles and Dallas.
Plume
Plume is a Palo Alto-based software company that turns home and small-business WiFi into a managed, self-optimizing service. Its cloud platform - delivered through internet service providers rather than direct to consumers - uses machine learning to continuously tune connectivity, secure connected devices, and layer on consumer apps like parental controls, motion-sensing, and guest access. Built on the open-source OpenSync framework, Plume powers tens of millions of locations and more than a billion connected devices worldwide for operators including Comcast, Charter, Liberty Global, and Vodafone.
Stealth Communications
Stealth Communications is a New York City fiber-optic internet provider that has been quietly digging up Manhattan streets since 1995 to lay its own dark fiber, build its own routers, and sell ultrafast, dedicated business internet to enterprises, schools, broadcasters and government agencies.