Usability
Interface 
User-friendliness/complexity of the tool´s interface
Straightforward, intuitive.
Time efficiency Time needed for mastering the „how-to“ of the tool and a production of a task
Medium.
Interface language(s) The number of languages in which the tool is currently available/adaptable to
English.
Respect for privacy Does the tool require registration? Who can see my data? Can I remain anonymous?
Medium. Frameable Inc., which owns Plectica, collects user information such as username, name, email, photo/avatar (optional), and account creation date. It does not share, rent, or sell user data to third parties, but collects cookies for running its services, and may use third-party tools for analytics, communications, and improving customer experience. Plectica has reasonable security measures in place. It does not state compliance with the GDPR. See more here.
Saving work for future use Possiblity to save your or others´ work for reuse/reproduction
Yes, login required.
Tailorability (If so, how?) Possibility of the tool to be used for a range of different activities (e.g. to what extent you can organize a project assignment with a central activity based on this tool)
Yes. All mind maps are created by users.