Milvus is a high-performance, cloud-native vector database built for scalable vector ANN 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 vector similarity search for Postgres

Approximate Nearest Neighbors in C++/Python optimized for memory usage and loading/saving to disk

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​.

Statistical Machine Intelligence & Learning Engine

Developer-friendly, embedded retrieval engine for multimodal AI. Search More; Manage Less.

MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.

mlpack: a fast, header-only C++ machine learning library

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

Represent, send, store and search multimodal data

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

Scalable, Low-latency and Hybrid-enabled Vector Search in Postgres. Revolutionize Vector Search, not Database.

📝Awesome and classical image retrieval papers

Vald. A Highly Scalable Distributed Vector Search Engine

Collections of vector search related libraries, service and research papers

🛰️ An approximate nearest-neighbor search library for Python and Java with a focus on ease of use, simplicity, and deployability.

Nearest Neighbor Search with Neighborhood Graph and Tree for High-dimensional Data

FAst Lookups of Cosine and Other Nearest Neighbors (based on fast locality-sensitive hashing)

TensorFlow Similarity is a python package focused on making similarity learning quick and easy.