The laptops prioritize privacy, security, and open-source software, offering features such as dedicated camera and microphone kill switches, as well as its own Debian-based PureOS.
Purism says it's raised $2.5m through crowdfunding and seed funding since 2015. It's now ready to invest in inventory to enable it to deliver orders faster. Until now, all laptops were made-to-order and took months to deliver, whereas orders can now be delivered within a "few weeks after purchase".
The decision to stock the laptops was taken to satisfy accelerating demand, according to Pursim, which claims its been "experiencing 38% and 35% average monthly growth over the last 12 months for its Librem 13" and 15" laptops, respectively".
"Going from made-to-order to holding inventory is proof positive that there is a growing demand for products like the Librem," said Todd Weaver, CEO and Founder at Purism.
"Users are starting to realize that security features are no longer a 'nice to have' but a necessity to protect their increasingly precious digital identity."
To boost its security credentials, Purism has also teamed up with security researcher Trammell Hudson to bring his Heads firmware to Librem laptops. Hudson's work includes the discovery of a bug in the Mac's Thunderbolt port, called Thunderstrike, that could be used to install malware.
Purism's claim that it would only run free software right down to the kernel was treated with skepticism from open source developers, given the laptops run on Intel chips. A sore point was that its first devices shipped with a proprietary AMI UEFI BIOS.