#66th of 15 in Chat UIs

odysseus

Self-hosted workspace for chat, agents, email, documents, notes and calendar

Live demo ↗ Website ↗ Repository on GitHub ↗

Stars: 93.5k
License: AGPL-3.0
Last commit: Oct 2026
Language: Python

Stars, last 19 weeks+48,958

44,520 on 3 Jun 202693,478 on 14 Oct 2026

From GitHub's daily star counts.

Checked 15 Oct 2026 on GitHub.

Overview

Odysseus is a self-hosted web workspace that combines chat with local or API models, tool-using agents, deep research, a document editor, an IMAP/SMTP email client, and notes with CalDAV calendar sync. Agents can use MCP, files, shell, skills and memory. A model cookbook recommends, downloads and serves models based on the host hardware.

Who it is for: Self-hosters wanting one workspace for chat, agents, mail and documents

Strengths

Covers chat, email, documents, notes and CalDAV calendar in one app
Agents support MCP, shell, files, skills and memory
Built-in blind side-by-side model comparison and multi-step deep research
Compose file pulls a prebuilt multi-arch image from ghcr.io

Weaknesses

Ships local shell and file tools; auth must stay enabled when exposed
Default branch is dev; the more curated branch is main
AGPL-3.0 license restricts closed-source network use
RAM and VRAM requirements are not stated in the README

What it needs

GPU optional
Docker + Compose
Needs Docker, Docker Compose
Models: local models, API models, MCP
port 7011

Also in Chat UIs

See all 15

Also in Chat UIs
Rank	Project	Score
1	LobeHubAgent workspace with builder, groups, scheduling and 10,000+ MCP skills83.2k starscustom license	84 out of 100
2	Open WebUISelf-hosted chat UI for Ollama and OpenAI-compatible APIs with RBAC and RAG155.7k starscustom license	82 out of 100
3	AnythingLLMDocument chat and agent app with built-in RAG, MCP and multi-user support67.1k starsMIT	81 out of 100
#4	OnyxTeam knowledge chat that indexes 50+ apps for RAG and agents Live demo ↗ (opens in a new tab)32.5k starscustom license	69 out of 100
#5	big-AGIMulti-model chat workspace with Beam side-by-side model comparison7.1k starsMIT	69 out of 100

How to choose

Confirm it talks to your backend (Ollama, OpenAI-compatible, Anthropic) without a plugin.
Multi-user auth, RBAC and SSO are where free and paid editions differ most.
Check what the default compose pulls in (database, vector store) before sizing the host.

Health

Releases: No GitHub releases
Top contributor: 32% of commits708 of 2,224 in the last 12 months
Security advisories: NoneOn GitHub, in the last 12 months
OpenSSF Scorecard: Not checked

Read from GitHub, deps.dev and OpenSSF on 15 Oct 2026. Bots and coding-agent accounts are left out of the commit counts. Not part of the score: how we check.

License in plain words

AGPL-3.0 Copyleft

Use it at work: Yes
Change it and rebrand it: Yes
Sell it or host it for others: Yes, with source

Your part: Like GPL-3.0, and if users reach a changed version over a network, offer them its source under AGPL-3.0.

A plain summary, not legal advice. Read the license on GitHub ↗ (opens in a new tab)

#6 of 15 in Chat UIs on Archestack, as of 15 Oct 2026.

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Best of Open-Source AI on GitHub

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