Self-hosted apps that integrate with OpenAI Realtime API

3 open-source, self-hostable projects list OpenAI Realtime API as an integration.

• God's Eye ViewSelf-hosted open-source CesiumJS globe with live flights, ships, satellites, weather and public camera feeds, voice AI control and an MCP server.
• AI Native Call CenterSelf-hosted open-source call center where AI agents answer every call by default, with seamless human handoff on FreeSWITCH and PostgreSQL.
• AIReceptionistSelf-hosted AI receptionist using OpenAI Realtime API for natural voice calls via SIP, replacing costly SaaS alternatives with FAQ, transfers, and messages.