What is the name of the famous tech company based in Silicon Valley, California that produces streaming media devices?

The famous tech company based in Silicon Valley, California that produces streaming media devices is Roku. Roku was founded in 2002 and has since become a leading provider of streaming media devices, offering a wide range of products for streaming music, TV shows, and movies. The company has also developed its own operating system, the Roku OS, which is used in many smart TVs and other devices.

Roku's products are known for their ease of use and affordability, and they offer access to thousands of channels, including popular streaming services like Netflix, Hulu, and Amazon Prime Video. The company has also developed its own channel, the Roku Channel, which offers a selection of free, ad-supported content.

Roku is considered one of the pioneers in the streaming media industry, and its success has inspired many other companies to enter the market. The company has won numerous awards for its products and has been recognized as one of the fastest-growing companies in Silicon Valley.