Open source focus

Open Source Alternatives to Vasys

7 open source Conversational AI options similar to Vasys, 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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Rasa49
Conversational AIBerlin, Germany$13.0M
Open-source conversational AI platform for building custom chatbots and virtual assistants.
Open source · Self-hostable
CRAB27
Agentic AI
An open-source framework for building, operating, and benchmarking Multimodal Language Model (MLM) agents across diverse environments.
Open source · Self-hostable
Causari10
Agentic AI
Causari provides structured causal knowledge to AI agents for tracing cause and effect, finding historical patterns, and searching for impactful events.
Open source · Self-hostable
AG
Agent4Rec20
Agentic AI
Simulates 1,000 LLM-powered agents for diverse movie recommendation preferences.
Open source
Langchain-Chatchat10
Open Source
Open-source, offline-deployable RAG and Agent application built on LangChain for local knowledge base Q&A.
Open source · Self-hostable
Firmgate7
Enterprise Software
Australian-owned, sovereign-built, open-source self-hosted intranet with AI-enabled enterprise modules.
Open source
GPT4All26
Foundation ModelNew York, United States
Open-source, privacy-focused AI assistant that runs locally on your hardware.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
RasaOpen-source conversational AI platform for building custom chatbots and virtual assistants.	Conversational AI	Open source · Self-hostable	Berlin, Germany	$13.0M	49
CRABAn open-source framework for building, operating, and benchmarking Multimodal Language Model (MLM) agents across diverse environments.	Agentic AI	Open source · Self-hostable	—	—	27
CausariCausari provides structured causal knowledge to AI agents for tracing cause and effect, finding historical patterns, and searching for impactful events.	Agentic AI	Open source · Self-hostable	—	—	10
AGAgent4RecSimulates 1,000 LLM-powered agents for diverse movie recommendation preferences.	Agentic AI	Open source	—	—	20
Langchain-ChatchatOpen-source, offline-deployable RAG and Agent application built on LangChain for local knowledge base Q&A.	Open Source	Open source · Self-hostable	—	—	10
FirmgateAustralian-owned, sovereign-built, open-source self-hosted intranet with AI-enabled enterprise modules.	Enterprise Software	Open source	—	—	7
GPT4AllOpen-source, privacy-focused AI assistant that runs locally on your hardware.	Foundation Model	Open source · Self-hostable	New York, United States	—	26