Open source focus

Open Source Alternatives to Synthflow AI

15 open source Voice Agent options similar to Synthflow 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.

View all alternatives to Synthflow AI →

Vocode50
Open SourceSan Francisco, United States$3.8M
Open-source library for building hyper-realistic voice agents and conversational AI applications.
Open source · Self-hostable
Coqui48
Voice AIBerlin, Germany$2.0M
Open-source AI models for voice synthesis, translation, and TTS.
Open source · Self-hostable
Kyutai68
Frontier AI LabParis, France$300.0M
A non-profit AI research lab focused on open science and developing advanced multimodal and voice AI models.
Open source · Self-hostable
Rasa49
Conversational AIBerlin, Germany$13.0M
Open-source conversational AI platform for building custom chatbots and virtual assistants.
Open source · Self-hostable
cal.com41
Scheduling SoftwareBerlin, Germany
Open-source scheduling infrastructure for individuals, businesses, and developers.
Open source · Self-hostable
LLMStack16
Agentic AI
Open-source, no-code platform for building and deploying AI agents, workflows, and generative AI applications.
Open source · Self-hostable
Talkcan7
Open Source
An open-source programmable walkie-talkie for routing voice through configurable channels.
Open source
OpenOps53
EnterpriseSan Francisco, United States$125K
No-code, open-source cloud automation platform for FinOps and custom solutions.
Open source · Self-hostable
Mycroft AI38
Voice AssistantKansas City, United States$4.0M
Open-source, privacy-focused voice assistant and AI platform.
Open source · Self-hostable
Mycroft35
Voice AIKansas City, United States$121.5M
Open-source, privacy-focused voice assistant and AI platform.
Open source · Self-hostable
Kantu26
Workflow Automation
Open-source browser extension and RPA software for automating web and desktop workflows.
Open source · Self-hostable
pyannote SAS23
Speech RecognitionParis, France
Company
Open source
Pomvox21
Voice AI
Press a key, talk, and clean text appears at your cursor, transcribed on the Apple Neural Engine. Free, open source, and fully private.
Open source
Camunda Inc.19
Process AutomationBerlin, Germany
Company
Open source · Self-hostable
Elementor69
WebsiteRamat Gan, Israel$65.8M
Elementor 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

Company	Sector	License	HQ	Funding	Score
VocodeOpen-source library for building hyper-realistic voice agents and conversational AI applications.	Open Source	Open source · Self-hostable	San Francisco, United States	$3.8M	50
CoquiOpen-source AI models for voice synthesis, translation, and TTS.	Voice AI	Open source · Self-hostable	Berlin, Germany	$2.0M	48
KyutaiA non-profit AI research lab focused on open science and developing advanced multimodal and voice AI models.	Frontier AI Lab	Open source · Self-hostable	Paris, France	$300.0M	68
RasaOpen-source conversational AI platform for building custom chatbots and virtual assistants.	Conversational AI	Open source · Self-hostable	Berlin, Germany	$13.0M	49
cal.comOpen-source scheduling infrastructure for individuals, businesses, and developers.	Scheduling Software	Open source · Self-hostable	Berlin, Germany	—	41
LLMStackOpen-source, no-code platform for building and deploying AI agents, workflows, and generative AI applications.	Agentic AI	Open source · Self-hostable	—	—	16
TalkcanAn open-source programmable walkie-talkie for routing voice through configurable channels.	Open Source	Open source	—	—	7
OpenOpsNo-code, open-source cloud automation platform for FinOps and custom solutions.	Enterprise	Open source · Self-hostable	San Francisco, United States	$125K	53
Mycroft AIOpen-source, privacy-focused voice assistant and AI platform.	Voice Assistant	Open source · Self-hostable	Kansas City, United States	$4.0M	38
MycroftOpen-source, privacy-focused voice assistant and AI platform.	Voice AI	Open source · Self-hostable	Kansas City, United States	$121.5M	35
KantuOpen-source browser extension and RPA software for automating web and desktop workflows.	Workflow Automation	Open source · Self-hostable	—	—	26
pyannote SASCompany	Speech Recognition	Open source	Paris, France	—	23
PomvoxPress a key, talk, and clean text appears at your cursor, transcribed on the Apple Neural Engine. Free, open source, and fully private.	Voice AI	Open source	—	—	21
Camunda Inc.Company	Process Automation	Open source · Self-hostable	Berlin, Germany	—	19
ElementorElementor is the leading open-source website builder platform for WordPress professionals, enabling pixel-perfect design and efficient site creation with AI-assisted tools.	Website	Open source · Self-hostable	Ramat Gan, Israel	$65.8M	69