Open Source Alternatives to Vertex AI Search
33 open source AI Search Engine options similar to Vertex AI Search, 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.
Feast AI54MLOpsSan Francisco, United StatesAn open-source feature store for managing and serving data for AI/ML models in production.
Open source · Self-hostable
PromptQL45Artificial IntelligenceSan Francisco, United StatesAn AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.
Open source · Self-hostable
- Littlebat9Open Source
Open-source AI tools for iOS and AWS, allowing self-hosting and data privacy.
Open source
- Firmgate7Enterprise Software
Australian-owned, sovereign-built, open-source self-hosted intranet with AI-enabled enterprise modules.
Open source
Databricks82Data AnalyticsSan Francisco, United States$36.7BA unified data analytics and AI platform built on the lakehouse architecture.
Open source · Self-hostable
Together AI76AI InfrastructureSan Francisco, United States$906.0MAI acceleration cloud platform for open source and enterprise.
Open source · Self-hostable
KiloClaw54Artificial IntelligenceA managed, private, and production-grade environment for OpenClaw, offering access to over 500 AI models and essential tools.
Open source · Self-hostable
LiteLLM53Foundation ModelSan Francisco, United StatesAn open-source Python library providing a unified interface for interacting with various LLM providers.
Open source · Self-hostable
GitHits45Developer ToolsHelsinki, Finland$1.5MThe Google of code search for open-source.
Open source · Self-hostable
- Spice AI40Databaseתל 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
LlamaIndex Inc.39Foundation ModelSan Francisco, United StatesCompany
Open source · Self-hostable
Responsive35EnterpriseSan Francisco, United StatesPlatform for developers building stateful reactive applications on the modern cloud with object store native databases.
Open source · Self-hostable
Inconvo25Agentic AIUnknown, UnknownInconvo is an open-source platform for building data agents on production data with safe queries, permissions, and structured outputs.
Open source · Self-hostable
Langchain-Chatchat10Open SourceOpen-source, offline-deployable RAG and Agent application built on LangChain for local knowledge base Q&A.
Open source · Self-hostable
DocsGPT8Open SourceOpen-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
Qdrant71Vector DatabaseBerlin, Germany$87.5MHigh-performance, open-source vector search engine built in Rust for production-grade AI and machine learning workloads.
Open source · Self-hostable
ScyllaDB67DatabasePalo Alto, United States$101.0MScyllaDB is a high-performance, low-latency NoSQL database for data-intensive applications, designed to scale with modern infrastructure.
Open source · Self-hostable
Airweave61Agentic AISan Francisco, United States$6.0MOpen-source tool to transform application data into accessible knowledge for AI agents.
Open source · Self-hostable
Appwrite58EnterpriseSan Francisco, United States$37.0MOpen-source backend-as-a-service platform for building scalable applications.
Open source · Self-hostable
Mem056Agentic AISan Francisco, United States$23.9MPersistent memory layer for AI agents and applications.
Open source · Self-hostable
pgEdge, Inc.55DatabaseSan Francisco, United States$24.0MpgEdge offers distributed PostgreSQL that is optimised for the network edge in order to reduce data latency.
Open source · Self-hostable
RelAI51Agentic AISan Francisco, United States$6.9MAn open-source platform for building, simulating, evaluating, and optimizing reliable AI agents.
Open source · Self-hostable
Keep45EnterpriseSan Francisco, United States$2.5MOpen-source alert management platform using AI to reduce noise and improve alert actionability for engineers.
Open source · Self-hostable
SkySQL39DatabaseRedwood City, United States$42.0MProvides enterprise-grade database solutions based on the open-source MariaDB, offering advanced features, security, and scalability.
Open source · Self-hostable
Cua39AI AgentSan Francisco, United States$500KCua provides an open-source framework and cloud desktops for AI agents to control operating systems and desktop applications across Linux, Windows, macOS, and Android.
Open source
- Procfunc23Developer Tools
A service written as a plain Go function, supervised by lesiw.io/proc for reliability and distribution.
Open source
Camunda Pte. Limited20Workflow AutomationBerlin, GermanyCamunda provides an open-source process automation platform for orchestrating human and system workflows.
Open source · Self-hostable
Apache Cassandra10DatabaseOpen-source, distributed NoSQL database for handling large-scale, high-availability data without compromising performance.
Open source · Self-hostable
- Arxivexplore6Foundation Model
A free, open-source Wolfram Language paclet for word statistics, TeX and citations dissection, neural networks, and LLM automated reports over arXiv articles.
Open source
- Supabase70DatabaseSan Francisco, United States$933.0M
Open source Firebase alternative with a PostgreSQL backend and real-time capabilities.
Open source · Self-hostable
npm66Developer ToolsOakland, USA$10.6MThe world's largest software registry for JavaScript packages and the default package manager for Node.js.
Open source · Self-hostable
Logz.io63EnterpriseTel Aviv, Israel$122.0MLogz.io provides an observability platform for cloud-native businesses, combining open-source tools for monitoring and security.
Open source · Self-hostable
Codefresh62EnterpriseBrisbane, Australia$42.0MOctopus Deploy provides a unified platform for continuous delivery, automating deployments, runbooks, and operations for modern applications.
Open source · Self-hostable