Onyx is open-source enterprise search. It connects the tools your company already uses — Slack, Google Drive, Confluence, Jira — and lets staff ask questions in plain English, with links back to the source.
What is Onyx?
Onyx was known as Danswer before its rebrand. It crawls and indexes 40-plus connectors, then layers an AI assistant on top of that index. You can self-host it, which is the main reason security-conscious teams pick it over closed alternatives like Glean.
Onyx features that matter
- 40+ connectors: Slack, Drive, Notion, Confluence, GitHub, SharePoint and more.
- Hybrid search: keyword plus semantic retrieval over the same index.
- Custom assistants: build a bot scoped to a team or document set.
- Permissions sync: a user only sees files they can already access.
- Self-host or cloud: Docker deployment, or their managed version.
Product highlights
The permission model is the selling point. Enterprise search that ignores access control is a security incident waiting to happen, and Onyx keeps source-app permissions intact. Citations reduce hallucination worries because users can click through.
Self-hosting means you need someone to run it — Postgres, a vector store, and a couple of containers. Setup is a real project, not a five-minute signup.
Who should use Onyx
Right for mid-size companies with data-residency or privacy constraints, and for teams that already run Docker. Not for a three-person startup that just needs one Slack bot.
Common use cases
- Answering “where is the Q3 pricing doc?” across departments.
- Onboarding bots that know internal how-tos.
- Engineering assistants over code and tickets.
- Support teams searching past resolutions.
- Replacing fragile FAQ wikis.
Pricing and limits
The open-source version is free (MIT). Onyx sells a cloud and enterprise plan for managed hosting and support. You supply your own LLM keys, so inference cost is on you.
Quick Summary
- Onyx (formerly Danswer) is open-source enterprise search and assistants.
- Indexes 40+ workplace apps with permission-aware results.
- Free self-hosted version; paid cloud/enterprise available.
- Self-hosting needs real infrastructure work.
- Best for privacy-conscious mid-size companies.
