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Open-source repos for Slack

15 repos tagged Slack, sorted by GitHub stars. Add filters from the other category types to narrow the list.

15repos tagged Slack

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  1. openclaw/openclaw

    Personal AI assistant you run on your own machine and talk to through chat apps, able to act on files, apps and the web.

    AI agents, WhatsApp, Telegram, Operations, Self hosters, Solo founders

    394k starsMITUpdated 3 Nov 2026

  2. NousResearch/hermes-agent

    Nous Research agent that keeps memory and builds reusable skills over time, reachable from the terminal or chat apps.

    AI agents, Telegram, Discord, Engineering, Operations, Self hosters

    260k starsMITUpdated 3 Nov 2026

  3. outline/outline

    Team knowledge base and wiki with real-time editing, Markdown support and Slack integration.

    Docs and wiki, Knowledge base, Web, Docker, Operations, Engineering, SaaS, Self hosters

    41.2k starsOtherUpdated 3 Nov 2026

  4. mattermost/mattermost

    Self-hosted team messaging with channels, threads, playbooks and integrations, a Slack alternative.

    Internal tools, Web, Docker, Operations, Engineering, Self hosters

    39.5k starsOtherUpdated 3 Nov 2026

  5. dgtlmoon/changedetection.io

    Monitors web pages for content, price or restock changes and sends alerts to email, Slack and more.

    Web scraping, Social listening, Monitoring, Docker, Email, Marketing, Operations, E-commerce, Retail, Self hosters

    35.5k starsApache-2.0Updated 2 Nov 2026

  6. onyx-dot-app/onyx

    Workplace AI search and chat that connects to 40+ sources like Slack, Drive and Confluence.

    RAG and search, Knowledge base, Chatbots, Docker, OpenAI, Operations, Customer support, SaaS, Self hosters

    33.2k starsOtherUpdated 3 Nov 2026

  7. ComposioHQ/composio

    Toolkit that connects agents to 250+ apps like Gmail, Slack and GitHub with managed auth.

    AI agents, Workflow automation, GitHub, Email, Engineering, SaaS

    30.9k starsMITUpdated 3 Nov 2026

  8. enescingoz/awesome-n8n-templates

    Collection of 280+ importable n8n workflow files for Gmail, Telegram, Slack, Notion, AI agents and RAG bots.

    Workflow automation, AI agents, Chatbots, Email, Telegram, Operations, Marketing, Agencies, No-code, Solo founders

    26.2k starsOtherUpdated 12 Sept 2026

  9. langbot-app/LangBot

    Connects LLMs and agents to chat platforms like Telegram, Discord, Slack and WeChat as bots.

    Chatbots, Telegram, Discord, Customer support, Creators, Community building

    18.7k starsApache-2.0Updated 3 Nov 2026

  10. MODSetter/SurfSense

    Self-hosted research assistant that searches your notes, Slack, Notion and the web, like NotebookLM.

    RAG and search, Knowledge base, Notion, Operations, Self hosters

    16.7k starsApache-2.0Updated 2 Nov 2026

  11. automatisch/automatisch

    Lightweight open-source Zapier alternative for linking services like Slack, Twitter and Sheets.

    Workflow automation, Docker, Operations, Marketing, Agencies, No-code, Self hosters

    14k starsOtherUpdated 12 Feb 2026

  12. botman/botman

    PHP framework for building chatbots across Slack, Telegram, Facebook Messenger and web.

    Chatbots, Telegram, Facebook, Customer support, Engineering

    6.1k starsMITUpdated 3 Apr 2026

  13. korotovsky/slack-mcp-server

    MCP server for Slack that lets assistants search, read and post in channels and DMs.

    AI agents, Workflow automation, Operations, Customer support

    1.9k starsMITUpdated 16 Jul 2026

  14. orangecoding/fredy

    Self-hosted bot that watches European rental and property sites and alerts you to new listings.

    Web scraping, Workflow automation, Docker, Telegram, Operations, Real estate, Self hosters

    1.6k starsApache-2.0Updated 2 Nov 2026

  15. chiefonboarding/ChiefOnboarding

    Employee onboarding platform that sends new hires sequenced tasks, intros and resources via Slack or email.

    Onboarding, Web, Email, HR, Self hosters

    934 starsAGPL-3.0Updated 1 Nov 2026