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Open Source Chatbot Platforms using Testing Library

A curated collection of the best open source tools to build, deploy, and manage AI-powered conversational agents across various channels, automating customer interactions and support services. using Testing Library.

Parlant

AI
Structured control layer for customer-facing AI agents

  • Stars

    18,313

  • Last commit

    3 days ago

  • License

    Apache-2.0
A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.

Open Source Alternative to:

Voiceflow

Dograh

AI
Self-hostable voice agent platform with full model control

  • Stars

    Stars growing over the last 30 days5,990

  • Last commit

    23 hours ago

  • License

    BSD-2-Clause
Open-source voice agent platform that lets you plug in your own STT, LLM, and TTS models, deploy on-prem or in your VPC, and build agents via MCP or a visual workflow builder.

Open Source Alternative to:

Voiceflow
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