Qdrant
High-performance vector similarity search service with a convenient API, designed for AI-powered applications requiring fast and scalable search capabilities.
Qdrant is an open-source alternative to:

Qdrant is an open-source vector search engine written in Rust, optimized for AI applications that require efficient similarity search. It provides a scalable and fast vector similarity search service with a convenient API, making it ideal for use cases like recommendation systems, RAG (Retrieval-Augmented Generation), and advanced search.
Key Features
- High Performance: Built in Rust for speed and efficiency, supporting fast vector similarity search.
- Scalability: Designed to handle large-scale vector datasets with ease.
- Flexible API: Offers a user-friendly API for seamless integration with applications.
- Multi-Tenancy Support: Enables efficient management of multiple collections and tenants.
- Hybrid Search: Supports both vector and scalar filtering for enhanced search capabilities.
- Cloud & Self-Hosted Options: Available as Qdrant Cloud, Hybrid Cloud, or self-hosted solutions.
- Enterprise Solutions: Tailored offerings for businesses with advanced requirements.
- AI Integration: Optimized for AI applications, including RAG, recommendation systems, and anomaly detection.
Tech / Self-Hosting
Qdrant is open-source and can be self-hosted on any infrastructure. It supports Docker deployments and provides comprehensive documentation for setup and configuration. The project is actively maintained with regular updates and a strong community backing.