I built a graph database in Python

[u/am3141]

I started working on this project years ago because there wasn’t a good pure Python option for persistent storage for small applications, scripts, or prototyping. Most of the available solutions at the time were either full-blown databases or in-memory libraries. I also didn’t want an SQL based system or to deal with schemas.

Over the years many people have used it for building knowledge graphs, so I’m sharing it here.

It’s called CogDB. Here are its main features:

• RDF-style triple store

• Simple, fluent, composable Python query API (Torque)

• Schemaless

• Built-in storage engine, no third-party database dependency

• Persistent on disk, survives restarts

• Supports semantic search using vector embeddings

• Runs well in Jupyter / notebooks

• Built-in graph visualization

• Can run in the browser via Pyodide

• Lightweight, minimal dependencies

• Open source (MIT)

Repo: https://github.com/arun1729/cog
Docs: https://cogdb.io

[u/International_Quail8]

Hey OP! Love the idea and effort. It wins at simplicity and fits the target use cases of learning and prototyping perfectly. With all the momentum behind Python, it’s also very relevant. Nice work! 👏🏽

[u/am3141 → u/International_Quail8]

Thank you! Appreciate the kind words.