Download of AvaSoft Thinfilm 2.1 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The software lies within Office Tools, more precisely Calculators. The program's installer file is commonly found as thinfilm.exe. The following version: 2.1 is the most frequently downloaded one by the program users. This program is an intellectual property of Avantes BV.
From the developer:
AvaSoft-Thinfilm software is a stand-alone software package, that comes with the AvaThinfilm system.
The AvaSoft-Thinfilm software calculates a layer thickness from the reflection interference spectrum for optical transparent layers with known optical parameters.
You may want to check out more software, such as Spekwin32, which might be similar to AvaSoft Thinfilm.