Argdown lets one person write claims and pro/con relationships in a simple Markdown-like syntax that renders as an argument map, with a VS Code extension and web sandbox — popular with writers, students, and researchers. Argumentree is an alternative for teams who build and decide together: no syntax to learn, AI extraction of arguments from transcripts and documents, real-time multi-user editing, participant rating that aggregates into consensus scores, role-based access, an audit trail, and 66-language translation. Argdown is for solo authoring of maps; Argumentree is for collaborative decision-making.
Argdown is a markup language for authoring an argument map alone. Argumentree is a platform for a team to build one — and decide — together.
Argdown is a free, open-source markup language for argument mapping — write claims and their pro/con relationships in a simple, Markdown-like syntax and Argdown renders the map. With a VS Code extension and a web sandbox, it's a favorite of writers, students, and researchers who want to author an argument map precisely as text. It's an excellent authoring tool for one person working solo.
| Argdown | Argumentree | |
|---|---|---|
| What it is | A markup language for argument maps | A collaborative decision platform |
| How you build a map | Write Argdown syntax (text) | AI extraction + point-and-click, no syntax |
| Collaboration | Single-author (text files) | Real-time multi-user |
| Evaluation | — | Per-argument rating → consensus scores |
| Languages | — | 66, AI-translated arguments & chains |
| Best for | Writers, students, researchers authoring maps | Teams making and documenting decisions |
Background reading: what is argument mapping.
Argdown is a free, open-source markup language for writing argument maps as plain text — a bit like Markdown, but for arguments. You write claims and their pro/con relationships in a simple syntax, and Argdown renders them as a structured argument map. It has a VS Code extension and a web sandbox, and is popular with individual writers, students, and researchers.
Argumentree is an alternative for teams who want to build and decide together rather than author a map alone in text. Instead of writing syntax, you (or AI) extract arguments from transcripts and documents; multiple people contribute and rate arguments in real time; consensus is measured as net pro/con support; and everything is translated across 66 languages. Argdown is for authoring maps; Argumentree is for collaborating on decisions.
Argdown is a markup language and toolset for one person to author an argument map in text. Argumentree is a collaborative platform: no syntax to learn, AI extraction of arguments, real-time multi-user editing, participant rating and consensus scoring, role-based access, an audit trail, and 66-language translation. They share the goal of structured argumentation but serve very different workflows — solo authoring vs. team decision-making.
Bring your team into one shared, structured place to argue and decide — with Argumentree.
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