The short version
A formally verified microkernel for high-assurance systems.
From the HackerLinks archive
seL4
A formally verified microkernel for high-assurance systems.
At a glance:
First seen:2026-05-19
Last seen:2026-05-19
Times seen:1
Website:sel4.systems
Why it caught our attention
HN commenters framed it as the modern inheritor of capability-based OS ideas.
Where it surfaced on Hacker News
2026-05-19
Editorial paraphrase
Replies said to study seL4, called it a practical industrial proven-correct microkernel, and described its capability model in detail.
Original threadThe foundations of a provably secure operating system (PSOS) (1979) [pdf]
Also surfaced in this discussion