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AI · September 3, 2026

Sundial

Real-time multiplayer AI workspace. Open source

Visit github.comAlternativestop 11% of September 2026

What it does

Real-time multiplayer AI workspace. A Markdown editor where your team and your agents write in the same doc, live. Open source, local-first.

Real-time multiplayer AI workspace. A Markdown editor where your team and your agents write in the same doc, live. Open source, local-first. - sundial-org/sundial-desktop

A Markdown editor where your team and your agents write in the same document, live. Claude Code and Codex join your docs as collaborators, on the subscription you already pay for. Every edit by anyone, human or agent, is attributed and reviewable. Open source. Local-first. Runs on your own Claude Code and Codex. Select text, comment @Agent tighten this . The agent answers in the thread and its edit lands as a suggestion you accept or reject, while your teammate keeps typing. macOS. Download the app , drag it to Applications, open it. Free, no account needed. Windows / Linux. Not built yet, tracked in issues ; a star helps us prioritize. In the browser. The same editor runs at sundial.md…from github.com

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