I found an old Creaform3D EXAscan laying around at the company I work for, and tried to plug it on a computer to see if it still works.
I discovered that it uses a software called RapidForm for data acquisition, but its license is expired.
I looked in the manufacturer site for drivers or something similar but there isn't anything.
Is there any other software or way to read the data coming from such scanner?
So if the original manufacturer still exists, (which they appear to, and even list your scanner under 'legacy' products) your best chance of getting it working is going to be to contact them directly. Using proprietary hardware WITHOUT the associated proprietary software can range from merely tedious but possible, to outright impossible, depending on the specific company. Oftentimes with tech products like this, the business model isn't about the product itself, but about the license fees for the software to use it. That they can charge yearly for. It's possible that the raw data is just a stereo camera file with extensions renamed, and equally possible that the firmware in the scanner will do some sort of check for valid license before it will even start scanning, they don't really have much info on their legacy products on their page