alibaba/zvec - OSS Alternative - Discover Top Open Source Alternatives to Popular Software
In-process Vector Database Library
9.6k 2026-04-20

alibaba/zvec

Zvec is a lightweight, lightning-fast, in-process vector database built on Alibaba's Proxima, enabling scalable and low-latency similarity search directly within applications.

Core Features

Blazing fast vector search, handling billions of vectors in milliseconds.
Simple installation and usage with no server or complex configuration required.
Supports both dense and sparse vectors, including multi-vector and hybrid search capabilities.
Ensures data durability with write-ahead logging (WAL) for crash recovery.
Runs anywhere as an in-process library, from notebooks to edge devices.

Quick Start

pip install zvec

Detailed Introduction

Zvec is an open-source, in-process vector database leveraging Alibaba's battle-tested Proxima engine to deliver production-grade, low-latency, and scalable similarity search. Designed for direct embedding into applications, it eliminates the need for external servers, simplifying deployment and management significantly. Its core value lies in providing high-performance vector search for AI applications, supporting diverse vector types like dense and sparse embeddings, and enabling powerful hybrid queries. Furthermore, Zvec ensures robust data persistence through write-ahead logging and offers broad platform compatibility, making it a versatile choice for various development environments from notebooks to edge devices.

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