nowfound

Dev tools · May 21, 2022

Micro Graph Database for Python Applications

CogDB is an open source, persistent embedded graph database for Python with zero setup. Store relationships as triples, run vector similarity search with SIMD acceleration, and query using Torque – a fluent Python API. No server, no setup.

Micro Graph Database for Python Applications launched on May 21, 2022 with 19 votes, #864 of 2,942 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 4 years on.

In plain words

Micro Graph Database for Python Applications is a graph database designed for Python developers. Launched in 2022, it provides lightweight graph data storage and querying capabilities built specifically for Python projects. The tool is intended for developers who need graph database functionality without heavy overhead, making it suitable for applications requiring relationship-based data management at a smaller scale than enterprise solutions.

written from the facts on this page · September 2026

From the sources

No server. No config. Runs in notebooks, apps, even your browser. Combine traversal with similarity — filter by relationships and meaning. Traverse graphs with Torque — a fluent, chainable Python API. No Cypher, no query strings. pip install cogdb — no server, no Docker, no config, no dependencies. Jupyter notebooks, Python apps, Google Colab, even the browser viafrom cogdb.io

Does a similar job

all alternatives →
  • Cozo – new Graph DB with Datalog, embedded like SQLite2022 · github.com · ▲425

    Hi HN, I have been making this Cozo database since half a year ago, and now it is ready for public release. My initial motivation is that I want a graph database. Lightweight and easy to use, like SQLite. Powerful and performant, like Postgres. I found none of the existing solutions good enough. Deciding to roll my own, I need to choose a query language. I am familiar with Cypher but consider it not much of an improvement over CTE in SQL (Cypher is sometimes notationally more convenient, but not more expressive). I like Gremlin but would prefer something more declarative. Experimentations…

  • CH
    CozoDB, Hybrid Relational-Graph-Vector Database2023 · docs.cozodb.org · ▲137

    Hi HN! We're thrilled to share CozoDB v0.6, a monumental update to our FOSS database, which already unifies relational and graph features. With the addition of vector search, CozoDB becomes an even better companion for LLMs like ChatGPT. This release introduces vector search using HNSW indices within Datalog, enabling seamless integration with powerful features such as ad-hoc joins, recursive Datalog, and classical whole-graph algorithms. This update significantly broadens CozoDB's capabilities. Check out the linked release note for an in-depth look at the new features, comparisons to other…

  • HelixDB – Open-source vector-graph database for AI applications (Rust)2025 · github.com · ▲237

    Hey HN, we want to share HelixDB (https://github.com/HelixDB/helix-db/), a project a college friend and I are working on. It’s a new database that natively intertwines graph and vector types, without sacrificing performance. It’s written in Rust and our initial focus is on supporting RAG. Here’s a video runthrough: https://screen.studio/share/szgQu3yq. Why a hybrid? Vector databases are useful for similarity queries, while graph databases are useful for relationship queries. Each stores data in a way that’s best for its main type of query (e.g.…

  • LatticeDB – Like SQLite but for graph databasesAug 2026 · github.com · ▲190

    We have been using graph DBs more and more at work. I found them painful to work with locally and decided to try and build something better.

  • OctaneDB – Fast, Open-Source Vector Database for Python2025 · github.com · ▲33

    OctaneDB is an open-source vector database for Python that focuses on ultra-fast similarity search for high-dimensional data—perfect for AI/ML, semantic search, and large-scale document or embedding retrieval. What does it do? Store, index, and search millions of embeddings (text, images, etc.) with sub-millisecond query time. Supports in-memory and efficient HDF5 persistent storage. Integrates seamlessly with sentence-transformers for automatic text embedding. Key Features: 10x faster than Pinecone or ChromaDB for vector search and batch insertions. Advanced indexing: HNSW (approximate…

More dev tools this month

the category →
  • /dev/null▲472

    a social network for devs

    Dev tools · 2d ago · dev-null.sh

  • open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

    Dev tools · 27d ago · github.com

  • Contribute to reladraw/reladraw development by creating an account on GitHub.

    Dev tools · 25d ago · github.com

  • OpenBot▲362

    Grok Bot alternative: free, local, open-source, multiplayer

    Dev tools · 22d ago · openbot.run

  • Talanoa▲340

    Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

    Dev tools · 20d ago · talanoa.email

  • CoreSpeed▲332

    One MCP for everything your agents need: apps, memory, tools

    Dev tools · 27d ago · corespeed.io

Source: Show HN post ↗

Launched alongside, May 2022

the whole month →
  • Peerlist▲1,049

    A professional network w/ robust work profiles at its core

    Life & fun · 2022 · peerlist.io

  • Hey HN this is Daniel, I'm excited to share Airtop with the community! Airtop enables AI agents to seamlessly browse and automate any website — even ones with complex authentication like MFA or OAuth. Whether you need to scrape, interact with dynamic content, or automate tasks across multiple browsers, Airtop's cloud-based infrastructure makes it scalable and accessible. Why Airtop? — AI-Driven Web Automation: Automate interactions with any site through natural language commands even if they include human-in-the-loop scenarios. — Authentication Ready: Airtop handles websites requiring…

    Work · 2022 · airtop.ai

  • A whole new way to learn about a product’s journey

    Life & fun · 2022

  • Acapela▲715

    The central inbox for all your work tools

    Work · 2022 · acapela.com

  • Automagically reverse-engineer REST APIs via capturing traffic - alufers/mitmproxy2swagger

    Growth · 2022 · github.com

  • Claap▲685

    Async video collaboration for hybrid teams

    Work · 2022 · claap.io