Open-source Chat Helpdesk tools

The best open-source Chat Helpdesk tools, curated: 18 in the registry, including aiogram, AnythingLLM, bolt-python (Slack Bolt). Every tool is open-source; each entry lists license, self-hostability, and links.

18 tools · ← all categories · JSON

• aiogram — tool, 2026-09-03
  ~5800 stars; complements python-telegram-bot, Telethon; Official Bot API framework (FSM, middleware, magic filters). Auth via bot token. No ToS risk. Complementary alt to python-telegram-bot.
• AnythingLLM — tool, 2026-09-03
  Fully permissive; private doc chat
• bolt-python (Slack Bolt) — tool, 2026-09-03
  ~1300 stars; complements python-slack-sdk; Official Slack Bolt framework (Events API, Socket Mode, slash commands). Auth via bot/app tokens + OAuth. No ToS risk.
• Cossistant — tool, 2026-09-03
  OSS alt to Intercom; ~710 stars; via openalternative.co
• discord.py — tool, 2026-09-03
  ~16100 stars; complements serenity; Official Discord bot API wrapper. Auth via bot token. No ToS risk for bots (self-botting user accounts IS banned - don't). Proper rate limiting built in.; via ossinsight.io, GitHub cross-ref
• Fider — tool, 2026-09-03
  OSS alt to Featurebase; ~4458 stars; via openalternative.co
• Freescout — tool, 2026-09-03
  OSS alt to Zendesk; ~4465 stars; via openalternative.co
• LibreChat — tool, 2026-09-03
  Cleanest MIT chat platform; agents/MCP/RAG
• LogChimp — tool, 2026-09-03
  OSS alt to Featurebase; ~1114 stars; via openalternative.co
• matrix-nio — tool, 2026-09-03
  ~705 stars; complements mautrix-python; Open Matrix client-server protocol with E2EE. Auth via access token/password. Open federated standard; no ToS risk.
• mautrix-python — tool, 2026-09-03
  ~251 stars; complements matrix-nio; Matrix framework powering the mautrix bridges (and maubot). Open protocol; appservice auth via registration token. No ToS risk on Matrix side (individual bridges to WhatsApp/Telegram carry those platforms' ToS).
• python-slack-sdk — tool, 2026-09-03
  ~4000 stars; complements bolt-python; Official Slack SDK (Web API, Socket Mode, SCIM, audit logs). Auth via tokens/OAuth. No ToS risk. Lower-level than Bolt.
• python-telegram-bot — tool, 2026-09-03
  ~29400 stars; complements Telethon, aiogram; De-facto standard on official Telegram Bot API. Auth via bot token. No ToS risk (sanctioned Bot API). LGPL-3.0.; via ossinsight.io, GitHub cross-ref
• Rasa — tool, 2026-09-03
  Reference NLU framework; maintenance mode (CALM shift)
• serenity — tool, 2026-09-03
  ~5600 stars; complements discord.py; Official Discord API in Rust (sharding, cache, gateway). Auth via bot token. No ToS risk for bots.
• signal-cli — tool, 2026-09-03
  ~4800 stars; complements signald; Unofficial CLI built on official libsignal-client; registers/links a real Signal account. Widely relied-upon de-facto standard for server notifications -> finalist despite unofficial. platform-tos flagged (unsanctioned client; number could be limited). Auth via phone registration/link.
• Tiledesk — tool, 2026-09-03
  Live chat + LLM bot builder + human handoff
• Zammad — tool, 2026-09-03
  OSS alt to Zendesk; ~5834 stars; via openalternative.co