webOS

Debian is a free, open-source Linux operating system developed and maintained by a global community of volunteers. The distribution provides a stable and customizable computing environment for desktop computers, laptops, servers, cloud infrastructure, and embedded systems. Debian includes more than 70,000 software packages covering productivity applications, programming tools, databases, web servers, networking utilities, and system administration. Its Advanced Package Tool (APT) simplifies software installation, dependency management, security updates, and system upgrades. Users can choose from desktop environments such as GNOME, KDE Plasma, Xfce, Cinnamon, MATE, and LXQt or configure lightweight systems without a graphical interface. Debian supports multiple hardware architectures and offers Stable, Testing, and Unstable development branches to accommodate different requirements for reliability and software availability.

Chromium OS is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web. Here you can review the project's design docs, obtain the source code, and contribute. We think of Chromium as a tabbed window manager or shell for the web rather than a browser application. We avoid putting things into our UI in the same way you would hope that Apple and Microsoft would avoid putting things into the standard window frames of applications on their operating systems. The tab is our equivalent of a desktop application's title bar; the frame containing the tabs is a convenient mechanism for managing groups of those applications. In future, there may be other tab types that do not host the normal browser toolbar.