TL;DR
Dograh is an open-source alternative to Vapi and Retell, allowing you to quickly build and self-host voice agents using a drag-and-drop workflow builder.
Key features
Visual workflow builder: Design voice agent conversation flows with drag and drop.
Self-hosting: Deploy on your own infrastructure with a single Docker command, ensuring data sovereignty.
BYOK (Bring Your Own Key): Freely swap components like LLM, STT, TTS with your preferred providers.
MCP native support: Native support for Model Context Protocol (MCP) for easy integration with external tools.
Telephony integration: Supports PSTN/SIP phone calls.
Open source (BSD 2-Clause): All source code is publicly available for modification and redistribution.
When to use it
When you want to avoid vendor lock-in or high costs of commercial voice AI platforms like Vapi or Retell.
When compliance requires voice agent data to remain on your own infrastructure.
When you need flexibility to choose or customize components like LLM, STT, TTS.
When you want to quickly prototype and deploy complex conversation scenarios with a visual workflow builder.