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Let's Chat

Self-hosted chat app for small teams

Team Chat Archived ★ 9.8k stars Medium setup MIT

This project is archived. Upstream development has stopped, so expect no new features or security fixes. Consider an actively maintained team chat alternative.

Let's Chat is a persistent messaging application for small teams, offering chat rooms, file uploads, and history search. It is a lightweight Node.js application backed by MongoDB.

Official siteSource code

Key features

  • Persistent chat rooms
  • File uploads and image embeds
  • Searchable history
  • LDAP/Kerberos authentication

Pros & cons

Strengths

  • Released under the MIT license
  • First-class Docker support for quick deployment
  • Mature project with 9.8k GitHub stars
  • Written in JavaScript

Trade-offs

  • No longer actively developed
  • Dated interface

Is Let's Chat secure?

3 known vulnerabilities affect Let's Chat's latest release (0.4.0) according to OSV.dev; the most severe is rated high.

Affecting 0.4.0

AdvisorySeveritySummary
CVE-2026-66749HighLet's Chat 0.4.0 - 0.4.8 Denial of Service via Null Dereference in Room Lookup
CVE-2026-66750MediumLet's Chat 0.3.0 - 0.4.8 Broken Access Control File Disclosure via GET /files route
CVE-2026-66751MediumLet's Chat 0.3.0 - 0.4.8 Improper Authorization via DELETE /rooms/:room

Source: OSV.dev, checked 2026-10-14. How this is measured.

Let's Chat replaces

Self-hosted Slack alternativesSelf-hosted HipChat alternatives

Health badge

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SelfHostIndex: 15 · archived

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<a href="https://selfhostindex.com/app/let-chat/"><img src="https://selfhostindex.com/badge/let-chat.svg" alt="SelfHostIndex health score for Let&#x27;s Chat"></a>
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   :alt: SelfHostIndex health score for Let's Chat
   :target: https://selfhostindex.com/app/let-chat/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

Compare Let's Chat

6 head-to-head comparisons.

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