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Mountaintop CAD software

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romans-4657
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Hello everyone. I am new to the site, and have a query for the older surveyors. My company used Mountaintop CAD software for about 15 years up to around 2004. The drawing file extension is .MTX. It was great for itƒ??s time, but has been passed up by betters and is now obsolete. We now run AutoCAD with Carlson for surveying.

Our problem is that we have hundreds of old .MTX drawings that we cannot open or convert since our IT department decided to let the old UNIX platform collapse. We get calls constantly to update these older surveys, and must start from scratch in many cases.

If you have a working Mountaintop system and would like to make some extra cash converting .MTX to .DWG or .DXF, please let me know.

Thanks.

?ÿ


 
Posted : January 18, 2019 1:43 pm
a-harris
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Have you tried Bentley

Their software will open and print most any drawing files

It does not handle special text formats to scale so some objects will appear much larger than in the original drawing.


 
Posted : January 18, 2019 3:44 pm
romans-4657
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We do have Bentley. I will give it a try. Thanks.


 
Posted : January 21, 2019 9:41 am
true-corner
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If bentley doesn't work you might try bricscad (intellicad/linux).


 
Posted : January 22, 2019 9:35 pm
romans-4657
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Hello, True Corner... Thanks for the suggestion. Do you have Bricscad? If I send you a file, would you be willing to give it a try?


 
Posted : January 23, 2019 10:50 am

cf-67
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https://forums.autodesk.com/t5/autocad-2000-2000i-2002-archive/moutian-top-cad-systems-sound-familiar/td-p/142350

?ÿ

http://www.epvgroup.com

Googling around, it seems the above company own the software rights now. Might be worth contacting them?


 
Posted : January 23, 2019 11:08 am
true-corner
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Posted by: Romans 4657

Hello, True Corner... Thanks for the suggestion. Do you have Bricscad? If I send you a file, would you be willing to give it a try?

Do I own Bricscad??ÿ No.?ÿ I believe that Bricscad has a linux version of intellicad which should work with Unix.


 
Posted : January 23, 2019 10:51 pm
bsandrews
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Romans 4657, any luck?  we have the same problem.


 
Posted : March 26, 2019 11:45 am
romans-4657
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No luck with any third party software that will work, nor with finding anyone with active MTX software other than EPV in El Paso. They want $200 per file conversion, and are always threatening a shutdown which will require an $1800 re-setup fee. We apparently still have a license for MTX, but need to dedicate a PC to Unix emulation to make it work.


 
Posted : March 27, 2019 8:22 am
Tim
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Hi, you still looking for an answer to your Mountaintop software matter?  Maybe I can help you find a place to at least start to find an answer... the first engineering firm I worked for in the '80's had a previous employee named Hector Holguin that, as the story went, developed Mountaintop software.  I guess in the '60's the engineer that owned the company I worked for bought a computer, and one of his eit's became a wizard and developing the punchcard programs, and they would provide service to banks and such to run programs sometimes.  That eit went on to some measure of success beginning with the drafting software he developed.  Anyway, I just learned from Google that Holguin passed away in 2021.  If anyone has Mountaintop software, it would be an older engineering/surveying firm in El Paso, TX where Holguin is from.


 
Posted : June 10, 2026 11:38 am

RPlumb314
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I'd also be interested in hearing if this problem was solved. I don't have Mountaintop, but I had a similar issue some years ago with another Unix survey program. Company management (all engineers, not surveyors) decided to scrap it when HP quit selling their Unix computers.


 
Posted : June 10, 2026 4:29 pm
Sluggo
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How about buying a UNIX computer from eBay, there are many HP models listed.


 
Posted : June 10, 2026 5:18 pm
field-dog
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Very interesting post. A great example of the importance of preserving records.


 
Posted : June 11, 2026 5:38 am
GaryG
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Posted by: @sluggo
↑

How about buying a UNIX computer from eBay, there are many HP models listed.

Our first CADD system was Pacsoft running on an HP 320 workstation. I think it ran hp-unis or hp-basic. what a tough system. YEARS later i could pull that system out of storage, hook it all back up and plug in an old 3.5 disc to recover and old job. 

I miss that system, it was so well designed software and hardware integration. I keyed in thousands of topo shots on that and used one hand on the number key and and one on alpha for a descriptor. 

Have to say at times I really miss it. LOL

 


 
Posted : June 11, 2026 6:09 am
murphy-russell
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Hi there, I’d be willing to give it a try though fair warning, it would be an explorative effort. I’ve done some coding work with various plotting formats and it may be possible to do with some of the newer AI tools. Legacy file formats are hard to guess at though so we’d need to try one out and see. Let me know if you’d like to try a sample and see if it works!

 

murphy


 
Posted : June 12, 2026 6:09 pm