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Free and Open Source, Distributed, RESTful Search Engine

A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.

Vane is an AI-powered answering engine.

SearXNG is a free internet metasearch engine which aggregates results from various search services and databases. Users are neither tracked nor profiled.

Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/

Open Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch ⚡ 🔍 ✨ Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences

🦔 Fast, lightweight & schema-less search backend. An alternative to Elasticsearch that runs on a few MBs of RAM.

Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database​.

Tantivy is a full-text search engine library inspired by Apache Lucene and written in Rust

A lightweight, lightning-fast, in-process vector database

Privacy-respecting metasearch engine

🔎 Open source distributed and RESTful search engine.

Easy-to-use and powerful LLM and SLM library with awesome model zoo.

💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows

Open-source search database for full-text, vector, and hybrid search with real-time indexing and SQL.

Cloud-native OSS search engine for observability

Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.

🌌 A complete search engine and RAG pipeline in your browser, server or edge network with support for full-text, vector, and hybrid search in less than 2kb.

A free & open modern, fast email client with user-friendly encryption and privacy features

A query and indexing engine for Redis, providing secondary indexing, full-text search, vector similarity search and aggregations.

LLocalSearch is a completely locally running search aggregator using LLM Agents. The user can ask a question and the system will use a chain of LLMs to find the answer. The user can see the progress of the agents and the final answer. No OpenAI or Google API keys are needed.

Ecommerce Search and Discovery - marqo.ai

The AI-native database built for LLM applications, providing incredibly fast hybrid search of dense vector, sparse vector, tensor (multi-vector), and full-text.

Distributed Peer-to-Peer Web Search Engine and Intranet Search Appliance

💾 dn - offline full-text search and archiving for your Chromium-based browser.

Apache Lucene open-source search software

Web application that indexes all popular torrent sites, and saves it to the local database.

🧠 AI-powered enterprise search engine 🔎

A personal search engine: Create a searchable library from your personal documents, interests, and more!

All-in-one platform for search, recommendations, RAG, and analytics offered via API