Onyx

Onyx (formerly Danswer) is an open-source, MIT-licensed enterprise search and AI assistant that connects to 40+ workplace apps and answers questions in natural language over internal knowledge. It is model-agnostic, works with any LLM, and can be self-hosted for free or run as a managed cloud service priced per user. It appeals to security-conscious, engineering-capable teams that want data control and no vendor lock-in.

Onyx, previously known as Danswer, is an open-source AI chat and enterprise search platform that lets organizations ask questions in natural language across their internal documents, apps, and workflows. It ships with 40+ connectors (including tools like Microsoft Teams, Slack, Confluence, and Google Drive) and a model-agnostic architecture that works with essentially any LLM, so teams can pick their provider and keep control of their data. Because it is MIT-licensed and open-source, Onyx can be self-hosted at no software cost, giving organizations data residency, granular access controls, and the ability to customize connectors and behavior. This makes it especially attractive to security-conscious teams that want an alternative to closed enterprise-search SaaS. For teams that prefer not to run infrastructure, Onyx also offers a managed cloud option priced per user. Onyx emerged from Y Combinator (W24) and has grown a substantial open-source following on GitHub. It occupies the intersection of enterprise search, internal knowledge assistants, and open, self-hostable AI tooling, and is a strong fit for engineering-capable teams that value flexibility and control over turnkey simplicity.