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 worked with until Stream 85.

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!

edit Oct 2025: As of Stream 85 I have started on my own OS!

Thanks!

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