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Best Open Source Demi AI Alternative

A curated collection of the 1 best open source and self-hosted alternatives to Demi AI in 2026.

Looking for a free, privacy-friendly, or self-hosted replacement for Demi AI in 2026? The top open-source alternative is Inbox Zero — Automates Gmail and Outlook with AI-drafted replies, bulk unsubscribe, cold email blocking, attachment filing, and inbox analytics for individuals and teams..

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Automates Gmail and Outlook with AI-drafted replies, bulk unsubscribe, cold email blocking, attachment filing, and inbox analytics for individuals and teams.

Inbox Zero preview

Automates Gmail and Outlook with AI-drafted replies, bulk unsubscribe, cold email blocking, attachment filing, and inbox analytics for individuals and teams.

About Demi AI

Demi drafts replies in your voice, books meetings, and keeps important threads moving, so you can focus on what matters.