Open source focus

Open Source Alternatives to Heartmark

4 open source Agentic AI options similar to Heartmark, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

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Vocode
Not rated
Open-source library for building hyper-realistic voice agents and conversational AI applications.
Open source · Self-hostable
Rasa
Not rated
Open-source conversational AI platform for building custom chatbots and virtual assistants.
Open source · Self-hostable
Parlant
Not rated
Parlant is an open-source conversational AI engine dedicated to solving the Human/AI alignment problem by enabling Large Language Models to reliably perform as desired and prevent hallucinations.
Open source · Self-hostable
Coqui
Not rated
Open-source AI models for voice synthesis, translation, and TTS.
Open source · Self-hostable

Company	License	Founded	Rating	Reviews
VocodeOpen-source library for building hyper-realistic voice agents and conversational AI applications.	Open source · Self-hostable	-	Not rated	-
RasaOpen-source conversational AI platform for building custom chatbots and virtual assistants.	Open source · Self-hostable	-	Not rated	-
ParlantParlant is an open-source conversational AI engine dedicated to solving the Human/AI alignment problem by enabling Large Language Models to reliably perform as desired and prevent hallucinations.	Open source · Self-hostable	-	Not rated	-
CoquiOpen-source AI models for voice synthesis, translation, and TTS.	Open source · Self-hostable	-	Not rated	-