Is this software a descendant of the old Protel Autotrax?
Nope, completely different.
The story as I know it is that Protel/Altium were not happy at the time, and there was some dispute between them, but the Autotrax name was never trademarked, or they let it lapse or some such, so Altium didn't push it in the end.
But I'm sure Iliya can fill us in first-hand if he chooses.
I've always though the use of the name was just silly and confusing for everyone, Iliya knew perfectly well Protel had used that name for a long time.
I'm impressed by the new free offer
And have always been impressed that this is a one man effort.
Protel (now Altium) never trademarked AutoTRAX.
When I registered the trademark I searched the Protel web site for AutoTRAX. No reference found. I emailed Nick Martin in 2002 that I intended to market AutoTRAX.
The only reply I got from them was basically they reserved the right to use AutoTRAX in Australia. Then all of a sudden Protel AutoTRAX appeared on their website as a free download. (Perhaps to cover their backsides).
Anyway, no contact since 2002. Like that Parrot, Protel AutoTRAX could be deceased.
Can't see them ever using the AutoTRAX name - too much connection to the long gone founder of Altium. Perhaps they could make a new cut-down free version of CircuitMaker called AutoTRAX!
In 1981 I developed the first version of AutoTRAX on DOS (Not the Protel version) but decided not to sell it. It had a maze auto-router and that's why I called it AutoTRAX. I used the software to develop an AutoCAD add-on. I even formed a limited company AutoTRAX Ltd. back in 1981. I never knew about Protel.
I restarted AutoTRAX in 2000 after being fleeced of $1000 US for an educational copy of Multisim/Ultiboard. I though I had purchase the full version (Well I paid $1000!) but they were functions missing. So I thought S#D it, here goes.... The rest is history.