Fosnie

A self-hosted, open-core private AI workspace that provides chat, documents, agents, and RAG, solving the problem of data privacy and control for AI use. It targets developers, engineering teams, and enterprises, especially those in regulated sectors, who need to keep data on their own infrastructure. It is positioned as an alternative to cloud AI APIs, offering full control and zero-egress by default, with the core under Apache-2.0.

Key features

• Agentic RAG with hybrid search and rerank
• Model-agnostic with bring your own key
• Action-taking agents with human approval
• Deep research over documents and web
• Document generation in DOCX, PPTX, PDF
• Telephone agent for calls and screening
• Desktop app for Windows and macOS
• Voice speech-to-text and text-to-speech
• Code interpreter in zero-egress sandbox
• Groundedness verification against sources
• Tools and MCP connections over OAuth
• OpenAI-compatible API for custom code
• Teams and messaging with encryption