DpuScan 4.21.3107.3107 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. The following versions: 5.0 and 4.2 are the most frequently downloaded ones by the program users.
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 common filename for the program's installer is DpuScan.exe. This free program is a product of Janich & Klass GmbH. The software belongs to Photo & Graphics Tools.
From the developer:
DpuScan - the Universal Capture Software for Color and Black & White. Scanning in Color, Gray, or black & white at the same high speed is just one of the major strengths of DpuScan. Besides data entry through user-defined dialogs and the quality control of scanned paper batches, it is possible to perform image enhancement at the same time, and to recognize barcodes, patchcodes, and any text.
You may want to check out more software, such as vConverter, GrowCut or iSqFt Tiff Converter, which might be similar to DpuScan.