Open source focus

Open Source Alternatives to Quest Data

26 open source AI Search Engine options similar to Quest Data, 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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GitHits45
Developer ToolsHelsinki, Finland$1.5M
The Google of code search for open-source.
Open source · Self-hostable
Databricks82
Data AnalyticsSan Francisco, United States$36.7B
A unified data analytics and AI platform built on the lakehouse architecture.
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
Mem056
Agentic AISan Francisco, United States$23.9M
Persistent memory layer for AI agents and applications.
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
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
Kestra49
Data OrchestrationParis, France$36.0M
An open-source orchestration platform for unifying data pipelines, AI workflows, and business processes.
Open source · Self-hostable
RelAI49
Agentic AISan Francisco, United States$6.9M
An open-source platform for building, simulating, evaluating, and optimizing reliable AI agents.
Open source · Self-hostable
LlamaIndex Inc.39
Foundation ModelSan Francisco, United States
Company
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
Mastra74
AI AgentSan Francisco, United States$35.5M
An open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby.
Open source · Self-hostable
Firebolt65
Cloud Data WarehousePalo Alto, United States$264.0M
Cloud data warehouse for building next-gen analytics experiences with sub-second performance, designed for engineers and AI agents.
Open source
Nomic AI59
AI Infrastructure StackNew York City, United States$19.0M
Nomic AI builds tools to make AI explainable and accessible, focusing on data curation and visualization.
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
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
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
Apache Airflow20
MLOps
Open-source platform for programmatically authoring, scheduling, and monitoring data pipelines.
Open source · Self-hostable
Qdrant71
Vector DatabaseBerlin, Germany$87.5M
High-performance, open-source vector search engine built in Rust for production-grade AI and machine learning workloads.
Open source · Self-hostable
Dremio69
Data LakeSanta Clara, United States$395.0M
Self-service analytics on data lakes with data warehouse functionality and data lake flexibility.
Open source · Self-hostable
Posit67
Data Science PlatformBoston, United States$169.9M
Open-source data science platform for enterprise teams, enabling collaboration and reproducible results.
Open source · Self-hostable
ClickHouse62
DatabaseBerlin, Germany$350.0M
An open-source, column-oriented OLAP database management system for real-time analytics.
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
Metabase60
Data AnalyticsSan Francisco, United States$8.0M
Open-source business intelligence and embedded analytics platform.
Open source · Self-hostable
InfluxData58
DatabaseSan Francisco, United States$200.1M
Creator of InfluxDB, an open-source time series database for managing and analyzing high-volume, high-speed data.
Open source · Self-hostable
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
GitHitsThe Google of code search for open-source.	Developer Tools	Open source · Self-hostable	Helsinki, Finland	$1.5M	45
DatabricksA unified data analytics and AI platform built on the lakehouse architecture.	Data Analytics	Open source · Self-hostable	San Francisco, United States	$36.7B	82
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
Mem0Persistent memory layer for AI agents and applications.	Agentic AI	Open source · Self-hostable	San Francisco, United States	$23.9M	56
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
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
KestraAn open-source orchestration platform for unifying data pipelines, AI workflows, and business processes.	Data Orchestration	Open source · Self-hostable	Paris, France	$36.0M	49
RelAIAn open-source platform for building, simulating, evaluating, and optimizing reliable AI agents.	Agentic AI	Open source · Self-hostable	San Francisco, United States	$6.9M	49
LlamaIndex Inc.Company	Foundation Model	Open source · Self-hostable	San Francisco, United States	—	39
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
MastraAn open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby.	AI Agent	Open source · Self-hostable	San Francisco, United States	$35.5M	74
FireboltCloud data warehouse for building next-gen analytics experiences with sub-second performance, designed for engineers and AI agents.	Cloud Data Warehouse	Open source	Palo Alto, United States	$264.0M	65
Nomic AINomic AI builds tools to make AI explainable and accessible, focusing on data curation and visualization.	AI Infrastructure Stack	Open source · Self-hostable	New York City, United States	$19.0M	59
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
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
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
Apache AirflowOpen-source platform for programmatically authoring, scheduling, and monitoring data pipelines.	MLOps	Open source · Self-hostable	—	—	20
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	$87.5M	71
DremioSelf-service analytics on data lakes with data warehouse functionality and data lake flexibility.	Data Lake	Open source · Self-hostable	Santa Clara, United States	$395.0M	69
PositOpen-source data science platform for enterprise teams, enabling collaboration and reproducible results.	Data Science Platform	Open source · Self-hostable	Boston, United States	$169.9M	67
ClickHouseAn open-source, column-oriented OLAP database management system for real-time analytics.	Database	Open source · Self-hostable	Berlin, Germany	$350.0M	62
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
MetabaseOpen-source business intelligence and embedded analytics platform.	Data Analytics	Open source · Self-hostable	San Francisco, United States	$8.0M	60
InfluxDataCreator of InfluxDB, an open-source time series database for managing and analyzing high-volume, high-speed data.	Database	Open source · Self-hostable	San Francisco, United States	$200.1M	58
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