1. Kialo is the platform for rational debate. Empowering reason through friendly and open discussions.

  2. Open source, self-hosted forums

  3. Structured debating platform that allows you to flag fallacies

  4. DebateArt.com is a new online platform created with a purpose to give anyone a chance to test themselves in debates on different subjects.

  5. Argunet Editor is a free argument map editor for analyzing and visualizing complex debates.

  6. Argumentative is software for creating Argument Maps (the structural and visual representation of...

  7. Graph visualization of: Join a global community of mappers with over half a million ideas and 30,000 maps. Click on the bubbles to explore, and log-in to create free public & private maps on any topic!

  8. Rationale let's you create, online, argument maps.