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Work · alternatives · 2026

24 alternatives to TerminusDB

An open-source in-memory graph database

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. TerminusDB launched in 2020; newer entries below may have overtaken it.

  1. 1TA
  2. 2T2
  3. 3T4
  4. 4HO

    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.…

    2025 · github.com · its alternatives →

  5. 5TD
  6. 6

    Content infrastructure for the connected world

    2023 · its alternatives →

  7. 7

    Hey HN, it’s been just over a year since we launched HelixDB (https://news.ycombinator.com/item?id=43975423), a project a friend and I started in college. It’s an OLTP graph database built on object-storage, with native vector search and full-text search (FTS). Why graph, vector and FTS? Graph databases provide a natural cognitive model for data, vectors allow for a semantic understanding of the entities and relationships in the graph, and FTS provides more specific filtering. Many AI-driven applications attempt to combine all of these functionalities by stitching together…

    Jun 2026 · github.com · its alternatives →

  8. 8

    One year ago I open-sourced my very first 'real' project and shared it here. I was a college student in my senior year and desperately looking for a job. At the time of sharing it i couldn't even afford a domain and naively let someone buy the one i had my eyes on lol. It's been a hell of a year with this blowing up, me moving to another country, and switching 2 jobs. In a year we somehow managed to hit 26k stars, grow a 1000+ person discord community, and support 37 languages. I couldn't be more grateful for the community that helped this grow, but now i don't know what direction to take…

    2025 · drawdb.app · its alternatives →

  9. 9VD

    Hey HN! We are Jonathan & Guy, and we are happy to share a project we’ve been working on. ChartDB is a tool to help developers and data analysts quickly visualize database schemas by generating ER diagrams with just one query. A unique feature of our product is AI-Powered export for easy migration. You can give it a try at https://chartdb.io and find the source code on GitHub. Next steps ---> More AI. We’d love feedback :)

    2024 · github.com · its alternatives →

  10. 10OD

    Hey all! I released drawDB about a month ago and now it's open source. I hope you find it useful. If you want to check out the app you can go to https://drawdb.vercel.app/ . Thank you:)

    2024 · github.com · its alternatives →

  11. 11

    Database diagrams editor for teams

    2025 · chartdb.io · its alternatives →

  12. 12SG
  13. 13WH
  14. 14AO
  15. 15
    HelixDB▲105

    An open-source OLTP graph-vector database built in Rust.

    Feb 2026 · helix-db.com · its alternatives →

  16. 16
    Outerbase▲298

    The interface for your database

    2023 · its alternatives →

  17. 17

    Build versioned data products

    2021 · its alternatives →

  18. 18
    clientdb▲295

    Build lightning fast apps with instantaneous interactions

    2022 · its alternatives →

  19. 19AD

    Recently created a minimal persistent relational database in Go. Main focus was on implementing & understanding working the of database, storage management & transaction handling. Use of B+ Tree for storage engine(support for indexing), managing a Free List (for reusing nodes), Support for transactions, Concurrent Reads. Still have many things to add & fix like query processing being one of the main & fixing some bugs Repo link - https://github.com/Sahilb315/AtomixDB Would love to hear your thoughts

    2025 · github.com · its alternatives →

  20. 20

    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.

    17d ago · github.com · its alternatives →

  21. 21
    RelateDB▲140

    Offline-first database schema designer in your browser

    Jan 2026 · relatedb.com · its alternatives →

  22. 22
    QuestDB▲194

    Fastest open source database for time-series and analytics

    2020 · its alternatives →

  23. 23TD
  24. 24SB

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →