Download of OPTAC3 4.3 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The default filenames for the program's installer are Optac.exe, OPTACImportWizard.exe or OPTACToolConfig.exe etc. This program was originally developed by Stoneridge. The software lies within Business Tools, more precisely Legal. The most popular versions among the program users are 4.3 and 4.1.
From the developer:
The main aim of OPTAC3 Tachograph Analysis is to keep your drivers legal and compliant with the Drivers’ Hours Legislation and the Working Time Directive. It automatically checks the tachograph data against legislation and displays summaries and infringements in a clear, easy to understand format.
With 40+ different Driver & Vehicle Reports in 19 languages, Tachograph Analysis has never been so easy.
You may want to check out more software, such as OPTAC3 Import Wizard, which might be related to OPTAC3.