[jahitr]

BeOS was great.

All the hard work put on the icons and the GUI. It was truly remarkable.

If i'm not mistaken, I compiled my first C program on that OS.

Reading the SDK documentation was also a great source of ideas for a newbie in C++. I remember that the idea of flattenable objects blow my mind :D

To this day I still wonder why it hasn't gained more adoption.

Mad respect at all those folks working on Haiku!