Who is offlinemark and what is he streaming?

Welcome!

This page is for anyone who has stumbled across one of my live-streams and is wondering who I am and what I’m doing.

Who am I?

I’m an aspiring systems programmer. Professionally, I used to work in infosec, but now I work on music production software & hardware.

What am I streaming?

I stream OS/kernel development every week for 2 hours.

(I’ve done this for over 75 weeks in a row! Sundays 10a-12 ET)

From February 2024 to May 2025, I streamed myself doing all the labs for MIT’s old Operating Systems Engineering course (6.828 (2018)).

Through doing this, I became very familiar with JOS, which is the x86 OS used for the course. This is the OS which I work with in all of my streams.

I had almost no experience with OS development when I started, although I did have much experience with programming and low level concepts. I did the coursework because I wanted to write my own OS, but felt I wasn’t ready.

Now, from May 2025 to present, I’m pursuing my own learning agenda with OS development. Eventually I will start writing my own OS when the time is right!

Thanks!

Thanks for being here. If this is interesting to you, follow me on Youtube, Twitch, or Twitter. See you in a stream!