Dev tools · alternatives · 2026
24 alternatives to RethinkDB 2.0
Open source, production-ready database for the realtime web.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. RethinkDB 2.0 launched in 2015; newer entries below may have overtaken it.
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Slava Akhmechet schools us on RethinkDB and the realtime web
2015 · changelog.com · its alternatives →
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Hey there HN! We’re Joe and Stopa, and today we’re open sourcing InstantDB, a client-side database that makes it easy to build real-time and collaborative apps like Notion and Figma. Building modern apps these days involves a lot of schleps. For a basic CRUD app you need to spin up servers, wire up endpoints, integrate auth, add permissions, and then marshal data from the backend to the frontend and back again. If you want to deliver a buttery smooth user experience, you’ll need to add optimistic updates and rollbacks. We do these steps over and over for every feature we build, which can…
2024 · github.com · its alternatives →
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Horizon▲8Realtime open-source backend for JS apps by RethinkDB
2016 · sequence.xyz · its alternatives →
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SereneDBfree▲262Ultra-Fast Search & Analytics Database, Agentic AI ready
Sep 2026 · serenedb.com · its alternatives →
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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 →
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QuestDB▲194Fastest open source database for time-series and analytics
2020 · questdb.com · its alternatives →
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ZeroDB▲119An open-source, end-to-end encrypted database protocol
2015 · zerodb.io · its alternatives →
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KORE.io▲88A fast SPDY capable web server for web development in C
2015 · kore.io · its alternatives →
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Hey HN, We've been experimenting with a real-time, version-controlled NoDB for Deno & React called GoatDB. The idea is to remove backend complexity while keeping apps fast, offline-resilient, and easy to self-host. Runs on the client – No backend required, incremental queries keep things efficient. Self-hosted & lightweight – Deploy a single executable, no server stack needed. Offline-first & resilient – Clients work independently & can restore state after server outages. Edge-native & fast – Real-time sync happens locally with minimal overhead. Why We Built It: We needed something that’s…
2025 · github.com · its alternatives →
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Datomic▲73Distributed immutable transactional database for the cloud
2014 · datomic.com · its alternatives →
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GreptimeDB▲72Open-source database for large-scale time-series data
2022 · greptime.com · its alternatives →
- 19MR
2017 · blog.collaborizm.com · its alternatives →
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A look at modern database approaches and how Citus scales PG
2016 · softwareengineeringdaily.com · its alternatives →
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- 23AF
2025 · editor.besser-pearl.org · its alternatives →
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The local-first database that runs on every JS runtime and replicates with your existing backend - no vendor, no lock-in - https://rxdb.info/ - pubkey/rxdb
2017 · github.com · its alternatives →
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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 →