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pgvector

Open-source vector similarity search for Postgres.

View on GitHub Official site
Vector Databases Other Medium setup 21,335 stars

Overview

Plain English

Open-source vector similarity search for Postgres.

Technical

Open-source vector similarity search for Postgres.

Technical scorecard

License Other
Commercial use Yes
OpenAI-compatible API No
REST API No
Fine-tuning support No
Quantization support No
Docker available No
GUI / no-code available No
Telemetry None
Offline after setup Yes

Data & Privacy

Does it send data online?

After setup, this listing is marked as usable offline. Confirm network behavior against the upstream project before regulated deployment.

Does it store history?

Not verified in this directory yet. Review the upstream docs for persistence, logs, and workspace storage.

License checks?

Commercial use is marked as allowed or likely allowed by the listed license.

Telemetry?

None

Last verified: May 17, 2026. Maintainer verification should be treated as directory guidance, not legal advice.

Setup & Installation

Medium

A developer can usually get this running with standard docs.

Prerequisites

C, Docker, Bare Metal, Systemd / Linux Service 

# Start with the official project documentation
# https://github.com/pgvector/pgvector

Hardware Requirements

RAM8 GB minimum / 16 GB recommended
Hardware tagsCPU Only
Model formatsNot specified
Primary languageC

Works Well With

RAGFlow RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs. PrivateGPT Secure document Q&A system designed for sensitive data with no internet connection required for full operation. Marker Fast document converter transforming PDFs, EPUBs, and MOBI files into accurate markdown for LLM ingestion. Haystack (Deepset) Production-ready framework for building RAG and search systems with pipeline architecture and built-in evaluation tools.
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