The three companies — Nextcloud, Canonical and WDLabs — launched the device on Friday.
It is based on a Raspberry Pi board and consists of a hard drive and a case. It comes configured and can handle file storage and syncing out of the box.
Additional functionality can be had by installing apps like Spreed, OpenHab and Collabora Online. There is a terabyte of storage and it costs €70.
"WDLabs is very fortunate to have connected with our Nextcloud and Canonical teammates, and have found it to be a perfect fit of complementary capabilities coupled with high-speed co-development,” said Dave Chew, chief engineer, WDLabs.
"We’ve combined our latest technologies to create an integrated hardware/software platform for the Nextcloud community focused on ease of use, extensibility and affordability."
While the Nextcloud Box offers what one segment of the market needs, the three companies involved also have solutions for other segments.
Jane Silber, the chief executive of Canonical, said: "We have always believed that collaboration brings out the best in communities and companies alike. Together with WDLabs and Nextcloud we are able to bring the first Ubuntu Core-enabled device, as an app-enabled IoT gateway, to the market and to people’s homes."
"It has been a great co-operation with amazingly agile teams at Canonical and WDLabs,” said Frank Karlitschek, founder and managing director of Nextcloud.
"Empowering home users to sync and share their data with a secure, privacy-preserving solution built on a combination of cutting edge software and hardware platforms is no panacea and we’re proud to have delivered together!"
A list of vendors is here.