Plectica, a mind mapping and diagramming tool
Mind mapping
Description: Plectica is a visual mapping and diagramming tool for organising ideas, concepts, and relationships. Users can create visual representations of their thoughts and concepts using various shapes, colours, and connections. Then they can share these mind maps or diagrams and work on them collaboratively. Plectica offers a limited version and requires signing up for an account for use. Plectica was co-founded by Adam Riggs, Plectica’s current CEO.
Evaluation: Plectica is a useful tool for brainstorming in a class or smaller groups, together with helping create a visual representation when working on more complex topics. It is user-friendly and versatile since information can be arranged in lists, columns or freely, and moved by simply dragging it. Relationships can be emphasised by relating several cards with an arrow. All changes get saved automatically.
Cost: Free with registration + paid plans available.
Usability and tech notes ▼
Time efficiency 
Time needed to learn how to use a tool and its time-saving potential: Medium.
Interface language(s) The number of languages in which the tool is currently available/adaptable to: English.
Respect for privacy What data does the tool collect and why? What security measures are there? GDPR compliant? : Medium/high. 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 mentions reasonable security measures. It does not state compliance with the GDPR. See more here.
Saving work for future use Can work be saved for future use?: Yes, login required.