Open source focus

Open Source Alternatives to Atlasvector

22 open source Vector Database options similar to Atlasvector, 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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Mem056
Agentic AISan Francisco, United States$24.0M
Persistent memory layer for AI agents and applications.
Open source · Self-hostable
Visual Layer50
DatabaseTel Aviv, Israel$7.0M
AI-powered database for visual data, enabling intelligent search and analysis of images and videos.
Open source · Self-hostable
Feast AI54
MLOpsSan Francisco, United States
An open-source feature store for managing and serving data for AI/ML models in production.
Open source · Self-hostable
RelAI51
Agentic AISan Francisco, United States$10.0M
An open-source platform for building, simulating, evaluating, and optimizing reliable AI agents.
Open source · Self-hostable
Spice AI40
Databaseתל אביב - יפו, Israel
Ground AI in enterprise data with zero ETL. Spice is an open-source SQL query & hybrid search engine built for data-intensive apps & AI agents.
Open source · Self-hostable
Littlebat9
Open Source
Open-source AI tools for iOS and AWS, allowing self-hosting and data privacy.
Open source
Ainativex7
AI Infrastructure
An open-source AI IDE and infrastructure platform for building and deploying AI agents and applications.
Open source
Qdrant71
Vector DatabaseBerlin, Germany$96.5M
High-performance, open-source vector search engine built in Rust for production-grade AI and machine learning workloads.
Open source · Self-hostable
Airweave61
Agentic AISan Francisco, United States$6.0M
Open-source tool to transform application data into accessible knowledge for AI agents.
Open source · Self-hostable
MariaDB61
DatabaseRedwood City, United States$131.0M
A cloud database company providing a unified platform for transactional, analytical, and AI workloads.
Open source · Self-hostable
Xata59
DatabaseSan Francisco, United States$35.0M
Open-source Postgres platform for agent scale with copy-on-write branching.
Open source · Self-hostable
Vanna AI57
Agentic AINew York, United States$2.5M
An open-source AI-powered SQL agent for natural language database interaction and data insights.
Open source · Self-hostable
LiteLLM53
Foundation ModelSan Francisco, United States
An open-source Python library providing a unified interface for interacting with various LLM providers.
Open source · Self-hostable
GitHits45
Developer ToolsHelsinki, Finland$1.5M
The Google of code search for open-source.
Open source · Self-hostable
PromptQL45
Artificial IntelligenceSan Francisco, United States
An AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.
Open source · Self-hostable
LlamaIndex Inc.39
Foundation ModelSan Francisco, United States
Company
Open source · Self-hostable
Langflow32
Agentic AILisbon, Portugal
Low-code platform for building, iterating, and deploying AI applications, especially RAG and multi-agent systems.
Open source · Self-hostable
Inconvo25
Agentic AIUnknown, Unknown
Inconvo is an open-source platform for building data agents on production data with safe queries, permissions, and structured outputs.
Open source · Self-hostable
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
DocsGPT8
Open Source
Open-source AI platform for securely deploying intelligent agents, private enterprise search, and complex document workflows on an organization's own data.
Open source · Self-hostable
Firmgate7
Enterprise Software
Australian-owned, sovereign-built, open-source self-hosted intranet with AI-enabled enterprise modules.
Open source
SereneDB49
DatabaseSan Francisco, United States$3.8M
A real-time search analytics database unifying search and analytics in a single platform.
Open source · Self-hostable

Company	Sector	License	HQ	Funding	Score
Mem0Persistent memory layer for AI agents and applications.	Agentic AI	Open source · Self-hostable	San Francisco, United States	$24.0M	56
Visual LayerAI-powered database for visual data, enabling intelligent search and analysis of images and videos.	Database	Open source · Self-hostable	Tel Aviv, Israel	$7.0M	50
Feast AIAn open-source feature store for managing and serving data for AI/ML models in production.	MLOps	Open source · Self-hostable	San Francisco, United States	—	54
RelAIAn open-source platform for building, simulating, evaluating, and optimizing reliable AI agents.	Agentic AI	Open source · Self-hostable	San Francisco, United States	$10.0M	51
Spice AIGround AI in enterprise data with zero ETL. Spice is an open-source SQL query & hybrid search engine built for data-intensive apps & AI agents.	Database	Open source · Self-hostable	תל אביב - יפו, Israel	—	40
LittlebatOpen-source AI tools for iOS and AWS, allowing self-hosting and data privacy.	Open Source	Open source	—	—	9
AinativexAn open-source AI IDE and infrastructure platform for building and deploying AI agents and applications.	AI Infrastructure	Open source	—	—	7
QdrantHigh-performance, open-source vector search engine built in Rust for production-grade AI and machine learning workloads.	Vector Database	Open source · Self-hostable	Berlin, Germany	$96.5M	71
AirweaveOpen-source tool to transform application data into accessible knowledge for AI agents.	Agentic AI	Open source · Self-hostable	San Francisco, United States	$6.0M	61
MariaDBA cloud database company providing a unified platform for transactional, analytical, and AI workloads.	Database	Open source · Self-hostable	Redwood City, United States	$131.0M	61
XataOpen-source Postgres platform for agent scale with copy-on-write branching.	Database	Open source · Self-hostable	San Francisco, United States	$35.0M	59
Vanna AIAn open-source AI-powered SQL agent for natural language database interaction and data insights.	Agentic AI	Open source · Self-hostable	New York, United States	$2.5M	57
LiteLLMAn open-source Python library providing a unified interface for interacting with various LLM providers.	Foundation Model	Open source · Self-hostable	San Francisco, United States	—	53
GitHitsThe Google of code search for open-source.	Developer Tools	Open source · Self-hostable	Helsinki, Finland	$1.5M	45
PromptQLAn AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.	Artificial Intelligence	Open source · Self-hostable	San Francisco, United States	—	45
LlamaIndex Inc.Company	Foundation Model	Open source · Self-hostable	San Francisco, United States	—	39
LangflowLow-code platform for building, iterating, and deploying AI applications, especially RAG and multi-agent systems.	Agentic AI	Open source · Self-hostable	Lisbon, Portugal	—	32
InconvoInconvo is an open-source platform for building data agents on production data with safe queries, permissions, and structured outputs.	Agentic AI	Open source · Self-hostable	Unknown, Unknown	—	25
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
DocsGPTOpen-source AI platform for securely deploying intelligent agents, private enterprise search, and complex document workflows on an organization's own data.	Open Source	Open source · Self-hostable	—	—	8
FirmgateAustralian-owned, sovereign-built, open-source self-hosted intranet with AI-enabled enterprise modules.	Enterprise Software	Open source	—	—	7
SereneDBA real-time search analytics database unifying search and analytics in a single platform.	Database	Open source · Self-hostable	San Francisco, United States	$3.8M	49