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

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

  3. Discourse is an open source discussion platform built for the next decade of the Internet.

  4. Open source, self-hosted forums

  5. Structured debating platform that allows you to flag fallacies

  6. Add modern discussion and social interactions to your website

  7. Loomio helps groups of people make decisions together, online.

  8. Get support using and extending Flarum, the next-generation forum software that makes online discussion fun.

  9. Commentbox is a jsf component that allows quick realization of a comment functionality

  10. Get smarter about startups, technology, and society

  11. Get Satisfaction is the leading customer engagement platform that helps companies build better relationships with their customers and prospects, through the best online customer community.