similarity-search

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

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​.

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

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

One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.

Semantic cache for LLMs. Fully integrated with LangChain and llama_index.

🦛 CHONK docs with Chonkie ✨ — The lightweight ingestion library for fast, efficient and robust RAG pipelines

Fast Open-Source Search & Clustering engine × for Vectors & Arbitrary Objects × in C++, C, Python, JavaScript, Rust, Java, Objective-C, Swift, C#, GoLang, and Wolfram 🔍

A cross-platform video structuring (video analysis) framework based on CV models & mLLM.

🚀 efficient approximate nearest neighbor search algorithm collections library written in Rust 🦀 .

JVector: the most advanced embedded vector search engine

Vald. A Highly Scalable Distributed Vector Search Engine

Collections of vector search related libraries, service and research papers

ArcadeDB Multi-Model Database, one DBMS that supports SQL, Cypher, Gremlin, HTTP/JSON, MongoDB and Redis. ArcadeDB is a conceptual fork of OrientDB, the first Multi-Model DBMS. ArcadeDB supports Vector Embeddings.

A @ClickHouse fork that supports high-performance vector search and full-text search.

Similarities: a toolkit for similarity calculation and semantic search. 相似度计算、匹配搜索工具包，支持亿级数据文搜文、文搜图、图搜图，python3开发，开箱即用。

cuVS - a library for vector search and clustering on the GPU

Blazing fast framework for fine-tuning similarity learning models

C# .NET NOSQL ( key value, object store embedded TextSearch SemanticSearch Vector layer ) ACID multi-paradigm database management system.

vsag is a vector indexing library used for similarity search.