SealKernel

SealKernel is an "OS-like" CLI program that I made on 13th May 2026. SealKernel can read, write and execute files, contains RPG games, contains ASCII arts, uses rand() function and importantly a "tsastream" function that students can use to see their streaming marks and what classes they go to for the next term (ONLY SPECIFIC SCHOOL). SealKernel was written in C, uses stdio, stdlib, math and more libraries to write it.

How surprising, after more than 30 updates, it still only takes 80-90KB of storage. I think it is because it is a minimal, shell OS, and it isn't a "true" OS, and still need other OS like RHEL and Ubuntu to handle it

Even with that, this was a pretty impressive project I had made since I started programming when I was 8. Now I am 13, and I also created this thing when I was 13, also. It was just a gap of 3 months when I started creating this. Now was almost the end of my school's term so it means I have time to create this.

SealKernel also contains a boot menu, which you can select the latest version (updates around 3-5 times a week) or a stable version chosen by me.

SealKernel was once splitted into SealOS, BarrierOS and SeaLionOS, but then the other two were abandoned when SealOS changed its name to SealKernel. I hate maintaining same stuff but split/branched out into divisions, so I just kept the main branch and terminate the other ones, like how I stopped updating SealKernel EDU today, while tsastream still received updates and support still now. Until now, SealKernel (26.7.2026) contains 2460 lines of code. Lastly, SealKernel is completely OPEN SOURCE under GNU 3.0 Licensing.