Lisp!
FloEFD
Microsoft Exel…
Got any more hints?
Still only available to people with 100+ posts ? If it would possible to enter , my guess would be python 
So , what’s the answer ? 
I hope someone wins this beauty!
CAD/CAM
I would like to purchase this driver and some of your other drivers. Can anyone buy these?
Anylogic
My guess is that you used SPICE.
That is actually a pretty viable option, did not think about that.
We are running out of options here.
For my second guess I am going to say it was done in a small standalone industrial controller. Ladder logic?
You did it with an arduino?
chadvone: Send a PM. Not that there's a waiting list as I have to solder those myself...
Arduino is hardware, and the programming language it uses is C (with some libraries etc, but I'd still count it as C).
Well, let's start a third round then. Everyone has a guess again.
Hints:
It's a programming language, and it's not specialized on (thermal or other) simulations.
It's a programming language, not an IDE/application.
It runs on my PC.
I use a text editor to write the code.
It's actually quite common, though that hint might be misleading...
It's well older than 15 years.
Great. I sent a PM. I will send another with the drivers I would like. Thank you for getting back to me.
I will wait to guess. Put me on the list for 2 H17F’s
Chad
x86 ?
html?
Alright, I’ll take another guess with Scheme…
Did you write it in Basic ?
PM sent
DOS
EDIT: yeah, mixed some stuff up, guess it’s x86