Rationale - click to learn more.


Austhink's flagship product is Rationale™, the first high-quality software for argument mapping, the creation of diagrams of reasoning and argument.

Rationale™ will help:

  • Students learn the fundamentals of good reasoning, critical thinking, and argumentative essay writing;
  • Professionals (e.g. lawyers, analysts, business strategists, salespeople, board members, policy makers) handle complex reasoning more effectively.
Rationale builds on our years of experience developing and using Reason!Able in professional, research and educational contexts. We have learned from all the bouquets and brickbats sent our way from users of Reason!Able to produce what (we think) is by far the best, most intuitive and useful argument mapping software available.