Open Source Alternatives to Heyday AI
14 open source Conversational AI options similar to Heyday AI, 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.
Rasa49Conversational AIBerlin, Germany$13.0MOpen-source conversational AI platform for building custom chatbots and virtual assistants.
Open source · Self-hostable
Elementor69WebsiteRamat Gan, Israel$65.8MElementor is the leading open-source website builder platform for WordPress professionals, enabling pixel-perfect design and efficient site creation with AI-assisted tools.
Open source · Self-hostable
Probabl54MLOpsParis, France$18.5MTrack experiments, validate models, and collaborate with confidence using Skore, the methodology layer for AI coding tools.
Open source
Comfy Org53AI Image Generation$30.0MComfy is an AI creation engine for visual professionals, offering granular control over AI models, parameters, and outputs through a node-based workflow on an infinite canvas.
Open source
Vocode50Open SourceSan Francisco, United States$3.3MOpen-source library for building hyper-realistic voice agents and conversational AI applications.
Open source · Self-hostable
All-Hands AI49Agentic AIBoston, United States$5.0MAn open-source platform for building and running AI coding agents that automate software development tasks.
Open source · Self-hostable
Coqui48Voice AIBerlin, GermanyOpen-source AI models for voice synthesis, translation, and TTS.
Open source · Self-hostable
Slauth.io43EnterpriseAshburn, United States$1.5MArk Infotech offers Cybersecurity, AI/ML, Data Analytics, and IT consulting services, including the Slauth.io IAM Policy Copilot.
Open source · Self-hostable
cal.com41Scheduling SoftwareBerlin, GermanyOpen-source scheduling infrastructure for individuals, businesses, and developers.
Open source · Self-hostable
Mycroft35Voice AIKansas City, United States$3.5MOpen-source, privacy-focused voice assistant and AI platform.
Open source · Self-hostable
Parlant26AI AgentTel Aviv, IsraelParlant 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
Kilo Code24Agentic AISan Francisco, United StatesOpen-source, agentic AI coding tool for VS Code, combining Cline and Roo Code features.
Open source · Self-hostable
- OPOpenWorker7Agentic AI
OpenWorker is an open-source desktop AI agent that runs locally, integrates with everyday tools, and delivers finished outcomes by breaking down tasks.
Open source
Agentic Commerce Protocol (ACP)4AISan Francisco, United StatesOpen-source standard enabling secure, programmatic commerce transactions between AI agents and online businesses.
Open source · Self-hostable