Visual Common Works Registration Validator
This tool validates CWR 2.1 files and outputs result as colored HTML with additional mouse-over information on all fields.
This tool was released in December 2017 as a free tool. From July 2018 to December 2018, there was a commercial and a free limited version. In December 2017, a year after the initial release, the free version was removed.
The yearly subscription is €400 per user. There is no demo, preview or anything alike, as the current target groups are those familiar with the tool and users of other services, most notably related to their in-house development. There is a YouTube video playlist about this tool.