First edition · August 2026Reviews are updated when products change

Product profile · Calliope

Calliope AI writing app: agentic manuscript tools, Git history, and local files

A detailed profile of Calliope, the macOS writing app that connects a manuscript to Codex and records saved versions in Git.

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Published by the makers of Calliope

A writing app built for you and your AI agent.

Calliope and Codex work on the same manuscript. Write with an agent across scenes and chapters, review selected-text revisions, and return to any earlier version.

Agent
Codex now; Claude support planned for launch
Manuscript
Local files on the writer’s Mac
History
Git-backed versions with restore
Backup
Optional private GitHub repository