Puavo is a combination of web software (Puavo Web) and a specially configured system (Puavo OS) using Debian GNU/Linux operating system as its base. Puavo Web is built for managing user accounts and devices. Puavo OS is designed for large-scale deployment in primary and secondary schools. The source code for both is free software under GPLv2+ license...
Puavo OS is an operating system that is built from Debian GNU/Linux and is specifically designed for learning. It has historical roots in Linux Terminal Server Project, but has a different approach despite being similar in spirit. System is distributed as a read-only disk image that is updated atomically without any disruption for users.