Purism, SPC is an American computer technology corporation based in San Francisco, California[2] and registered in the state of Washington.

In addition to hardware, Purism also maintains PureOS, an operating system along with Librem One, a suite of software as a service based on open standards.

Purism was founded in 2014[3] with a crowdfunding campaign for the Librem 15,[4] An attempt to manufacture an Intel-based high-end laptop for Linux with "almost no proprietary software".

[19] Librem laptops ship with PureOS by default and an optional Qubes OS Universal Serial Bus (USB) drive.

These products ship with Purism's own operating system, PureOS, a derivative of Debian GNU/Linux, and an optional Qubes OS USB drive.

[51] On the hardware level, the baseband processor is separated and isolated from the CPU main bus, and connected via a fast USB interface instead.

The phone also implements hardware kill switches for the isolated baseband processor, Wi-Fi, Bluetooth, camera, and microphone.

[56] The Librem Key is a hardware USB security token with many features, including integration with tamper-evident Heads Firmware.

[57] Librem One is a paid subscription free-software social-networking suite launched April 30, 2019[58] claiming to prioritize decentralization and privacy, using repackaged open source applications.