What postmarketOS is
postmarketOS is a free and open-source operating system for smartphones, tablets, and other mobile devices, based on Alpine Linux. Rather than a modified version of Android, it is a true Linux distribution, much like the systems that run on desktop computers and servers. The project started in 2017 with an ambitious goal: keeping phones useful for ten years or more, long after their manufacturers stop updating them.
Fighting electronic waste
Most phones stop receiving updates after a few years, and many are thrown away while their hardware still works perfectly well. postmarketOS aims to break that cycle. Instead of relying on each manufacturer's software, it gives every supported device the same shared Linux base, so improvements reach all of them at once. The idea is that a phone's useful life should depend on its hardware, not on its maker's update policy.
Mainline kernels
A central part of the project is running the mainline Linux kernel, the official version maintained by the Linux community, instead of the heavily modified kernels that phone makers supply. Mainline support takes a lot of work, since drivers for each phone's hardware must be written or brought into the official kernel, but it means devices can keep receiving kernel updates for years. As a result, support levels vary widely between phones.
Choosing an interface
postmarketOS lets you choose the interface that runs on top of the system. Popular options include Phosh, a touch-friendly interface based on GNOME technologies, Plasma Mobile from the KDE community, and Sxmo, a minimal interface aimed at tinkerers. Because it is a full Linux system, you can run many ordinary Linux apps, and Android apps can run in a container through tools such as Waydroid.
Who it is for
postmarketOS is best suited to enthusiasts, developers, and people with spare phones they want to revive. On many devices, features such as calls, mobile data, or the camera may be missing or still in progress, so it is worth checking a device's support status on the project's wiki before installing anything. A smaller group of well-supported devices offers the most complete experience.
The bottom line
postmarketOS treats a phone like a small Linux computer, giving devices a shared, long-lived software base with mainline kernels and a choice of interfaces. It is not yet a drop-in replacement for Android on most phones, but it is one of the most ambitious efforts to fight electronic waste. For tinkerers and Linux fans, it offers a fascinating way to keep working hardware out of the drawer.
Related on Skillo
See also: What is Linux and why it runs the world, What is fastboot? Explained.
Sources
Published date reflects the original event date (2026-10-23). This article is original Skillo editorial written from the sources above; facts were verified in September 2026.
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