Onyx

Onyx (formerly Danswer) is an AI assistant for teams that answers from the company's own knowledge. It connects to more than 50 applications such as Slack, Google Drive, Confluence, email and ticketing tools, indexes their content together with permissions and metadata, and grounds chat answers in those documents with cited sources. Because retrieval runs against its own hybrid vector and keyword index rather than live API calls, answers stay fast and respect who is allowed to see what.

On top of search it offers agentic RAG, a multi-step Deep Research mode, custom agents with their own knowledge, instructions and actions, web search (Serper, Google PSE, Brave, SearXNG and others), MCP actions, a code sandbox, generated artifacts and a voice mode. It works with hosted models from OpenAI, Anthropic and Google or with self-hosted ones through Ollama, vLLM or LiteLLM. You reach it from the web and desktop app, a Slack or Discord bot, a Chrome extension, an embeddable widget, or as an MCP server that gives Claude Code, Codex and other agents company context under the same access controls.

The Community Edition is MIT-licensed and installs with one script on Docker, Kubernetes or Helm, including a Lite mode under 1 GB of memory and air-gapped setups. The Enterprise Edition adds SSO, SCIM, RBAC, analytics, query history and white-labelling. Onyx Cloud has a free trial and a Business plan at $20 per user per month billed annually. In 2026 Onyx announced it is joining Zoom while remaining a standalone, open-source product.