POSIX is an established standard that developers know how to interact with, providing them with a less complicated and less error-prone development process. Lots of existing software is built on the POSIX filesystem paradigm, ready to run in any environment that supports it or be integrated into new toolchains to reduce overall development time. POSIX stays relevant not because of bleeding-edge features, but because developers like its reliability — they only use object storage APIs because they have to.
Computerworld: The Windows desktop is dying
But it’s not because of Macs or Linux – it's because Microsoft wants your Windows desktop to live in the cloud.
Tarides: OCaml in Space - Welcome SpaceOS!
SpaceOS is an operating system that is secure by design, providing complete isolation between user software paired with effortless software updates.
SpaceOS is built on stable and safe programming logic (read on for details about the memory safety of OCaml) and MirageOS unikernel technology.
Typewritten Software: Historical workstation desktop interface screenshots
Spencer Baugh: The Unix process API is unreliable and unsafe
I have, for most of my life — because I was sort of born into it — run Apple.
Now recently, meaning within the last five years, I've become more and more depressed, and what Apple is doing to something that should allow you to work is just atrocious. But they are taking a lot of space and time to do it, so it's okay.
And I have come, within the last month or two, to say, even though I've invested, you know, a zillion years in Apple — I'm throwing it away. And I'm going to Linux. To Raspbian in particular.
TUHS: The evolution of Unix facilities and architecture (2017)
OpenBSD Handbook: OpenBSD for Linux Users
Drew DeVault: In praise of Plan 9
OS für Atari ST und Amiga
EmuTOS is a Free operating system for computers based on Motorola 680x0 or ColdFire microprocessors. It features functionality similar to TOS, which powered the Atari ST and its successors between 1985 and 1994.
It is actively developed and supported.
The Server Room Show: Episode 76 – 77 – 78: Oberon, Plan 9 and Inferno