Free open-source alternative to Airflow/Prefect/Airbyte/Dagster

In plain words

This is an open-source workflow orchestration platform launched in March 2022. It provides an alternative to commercial tools like Airflow, Prefect, Airbyte, and Dagster for managing data pipelines and task automation. The tool is designed for developers and data engineers who need to schedule, monitor, and execute complex workflows. Being open-source, it allows users to self-host and customize the orchestration system for their infrastructure needs.

written from the facts on this page · September 2026

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  Free hosted open-source alternative to Zapier/Airflow2020 · cloud.titanoboa.io · ▲279
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  Dagster Cloud2022 · dagster.io · ▲112

  The data orchestrator that puts developer experience first

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  Dagster+2024 · dagster.io · ▲286

  Ship data pipelines with extraordinary velocity

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  Kestra - Open-Source Airflow Alternative2022 · github.com · ▲142

  Hey HN, I'm really proud to share with you my new open source project: Kestra https://github.com/kestra-io/kestra I created a few years ago a successful open source AKHQ project: https://github.com/tchiotludo/akhq (renamed from KafkaHQ) which has been adopted by big companies like Best Buy, Pipedrive, BMW, Decathlon and many more. 2300 stars, 120 contributors, 10M docker downloads, much more than I expected. Now let's talk about Kestra, an infinitely scalable orchestration and scheduling platform for creating, running, scheduling and monitoring…

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  Kestra2024 · kestra.io · ▲470

  All-in-one automation & orchestration platform

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  Apache Airflow on Astronomer2018 · astronomer.io · ▲87

  Write and deploy custom ETL pipelines in Python

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  /dev/null▲490

  a social network for devs

  Dev tools · 4d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

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

  Dev tools · 29d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

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

  Dev tools · 27d ago · github.com

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  Run full iOS 16.5 firmware on Android Devices▲366

  Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

  Dev tools · 14h ago · github.com

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  OpenBot▲362

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

  Dev tools · 24d ago · openbot.run

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  Talanoa▲346

  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 · 21d ago · talanoa.email

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  I made a web game called Almost Pong▲1,135

  Hi HN! I made many small web games in the past with Unity or Phaser. But this time I wanted to make something completely on my own. So I coded a basic game framework in plain JavaScript, and used it to make Almost Pong. This was a really fun project that taught me a lot about JavaScript, and I plan to make more minimalist games with this framework. Interesting fact: Almost Pong doesn't load any assets, all sprites and sounds are generated with code. Happy to answer questions, and please let me know if you have any feedback on the game. Thanks!

  Dev tools · 2022 · lessmilk.com

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  I'm writing a free book called Computer Networks from Scratch▲792

  Life & fun · 2022 · networksfromscratch.com

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  HN Avatars in 357 bytes▲701

  Paste the following into the console of any HN page - for annotated avatars on all HN comments. (self contained code) for(u of document.querySelectorAll('.hnuser'))for(u.prepend(c=document.createElement('canvas')),x=c.getContext('2d'),c.width=18,c.height=14,s=u.innerText,r=1,i=28+s.length;i--;i>>29>X*X/3+Y/2&&x.fillRect(6+2*X,2*Y,2,2)&x.fillRect(6-2*X,2*Y,2,2):r+=s.charCodeAt(i-28,x.fillStyle='#'+(r>>8&0xFFFFFF).toString(16)))r^=r>>17,r^=r>2

  Dev tools · 2022

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  Tome Beta▲697

  The storytelling tool for work

  Work · 2022 · tome.app

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  Kairn▲694

  Regain control over your days

  Dev tools · 2022

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  A game that tests how well you know your local area▲654

  How well do you know your area? Test your knowledge by locating streets on a map.

  Work · 2022 · backofyourhand.com