Assessment Portal is a tool aimed at consultants not practitioners, to assist consultants in the assessment process and to provide advice on the "improvement journey".
It includes a number of "cartridges" including "ITSM-journey" and "COBIT compliance". I am looking at a Tipu cartridge for this tool.
It supports consolidated surveys which is useful for subjective assessments e.g. of risk.
Pricing isn't clear from the website.