Mind42 is an online mind mapping application that allows users to visualize their thinking using the proven mind mapping method. The name refers to the collaborative features of the product, and is intended to be pronounced like "mind for two." It has been recommended by Freelance Weekly as one of their favorite time-management and organization tools.

The developer provides the full feature set of Mind42 free of charge, including:

Criticisms of Mind42 include the lack of offline editing ability, the lack of a mobile version and the limitation that only creators of mind maps, but not collaborators, can view and restore previous revisions of a mind map.