Q-DAS 8.4 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus.
The program lies within System Utilities, more precisely Device Assistants. Qs_stat_2_0.exe or qs_STAT_ME_4.exe are the default file names to indicate the Q-DAS installer. This free program is an intellectual property of Q-DAS GmbH. The following versions: 8.4 and 8.2 are the most frequently downloaded ones by the program users.
From the developer:
You can now record, save and evaluate your measurement data using the Q-DAS FREEWARE! recording data can either take place manually or via serial interface if your measurement device has one available. After data has been recorded, it is possible to perform an online evaluation using the Webservice of qs-STAT. This evaluation service is provided by Q-DAS and is completely free of charge for you!
You may want to check out more software, such as Nvivo to QDA Miner, QDA Miner or QDA Miner Lite, which might be similar to Q-DAS.
Reference
Puzzle