While open source enthusiasts still await the year of the Linux desktop, hardware developer Pine64 is advancing the cause of a $25 Linux-powered smartwatch, dubbed "PineTime." The Pine64 community has invited FreeRTOS or ArmMbed developers with an interest in smartwatches to join in its efforts to bring the product to market. Pine64 makes inexpensive Linux-based single board ARM computers that cost $15 to $20. It also makes an $89 Linux laptop called "Pinebook," which runs on the Pine A64 board. A few Linux distributions run on Pine A64.