Open-source DocuChat brings local-first RAG to legal documents

DocuChat is an open-source, self-hosted document chat app for attorneys that runs AI models locally via Ollama and stores data in an embedded LanceDB vector store. It verifies citations by checking whether quoted text actually appears in the source document, dropping unverifiable claims. The app avoids sending privileged legal documents to cloud AI vendors, addressing confidentiality and professional responsibility concerns.