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Top 23 Workflow Open-Source Projects
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n8n
n8n is a workflow automation platform for building AI-powered workflows and agents, connecting any AI model to any business system with full control over data, security, and deployment. Build visually or in code while n8n handles infrastructure from prototype to production with fully auditable executions.
Project mention: SOC-in-a-Box: One LLM, Eight Hats, A Production-Bar AI SOC on a Single GPU | dev.to | 2026-06-06n8n and similar visual workflow tools were on the list for one specific reason: leadership likes seeing the boxes-and-arrows. But the LLM nodes aren't first-class — you'd be wrapping every model call in HTTP, and the graph is in a database, not in code that's reviewable in a PR. Auditability and reproducibility are both worse than the LangGraph + bus path. (n8n is a great fit for non-LLM SOAR-style automations, just not for this.)
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Project mention: Bringing MongoDB Atlas and Voyage AI to Dify: Build RAG Workflows and Data Agents Without Heavy Glue Code | dev.to | 2026-05-31
The MongoDB extensions for Dify help close that gap.
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For senior engineers building custom job data visualization pipelines, the single biggest latency gain comes from pre-aggregating frequently accessed metrics instead of running joins at query time. In our benchmarks, querying raw job_postings tables with 1M rows took 210ms average, while pre-aggregated tables (updated hourly via PostgreSQL materialized views) reduced query time to 12ms. Use tools like Apache Airflow 2.7.3 to schedule materialized view refreshes during off-peak hours. For example, a materialized view for average salary by company can be defined as:
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xyflow
React Flow | Svelte Flow - Powerful open source libraries for building node-based UIs with React (https://reactflow.dev) or Svelte (https://svelteflow.dev). Ready out-of-the-box and infinitely customizable.
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Glad to see statecharts still getting attention!
I created XState, a JS/TS library for authoring, executing, and visualizing state machines/statecharts: https://github.com/statelyai/xstate
I've been working on it for 10+ years. The main thing I've learned is that statecharts are most valuable when they're treated as executable behavior, not just documentation.
That doesn't mean you need to use them everywhere or model everything with them. They're most useful when you have behavior where the answer to "what happens next?" depends on both the current state & the event. A statechart can act as an oracle for questions like: "Given I'm in this state, when this event happens, what is the next state, and what effects should run?"
I'm close to releasing an alpha of the next major version of XState, focused on better ergonomics, type safety, and composability, as well as a new visualizer/editor.
There's also an open-source basic statechart visualizer here: https://sketch.stately.ai
For the formal/spec side, SCXML is worth reading: https://www.w3.org/TR/scxml
Also worth reading the original paper by David Harel: https://www.weizmann.ac.il/math/harel/sites/math.harel/files...
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FastGPT
FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex question-answering systems without the need for extensive setup or configuration.
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Project mention: Top Open-Source Data Engineering Tools- Unravelling the Best in 2026 | dev.to | 2025-12-10
Kestra
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activepieces
AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents
Project mention: The AI Harness: why your AI coding agent is only as smart as the repo you put it in | dev.to | 2026-05-01Hi. I am an engineer at Activepieces, an open source automation platform (think Zapier, but you can self host it and read the source code). I write TypeScript for a living. I argue with bots about tabs vs spaces now. And our team spent the last few months really, really invested in one question:
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Project mention: volnux VS Prefect - a user suggested alternative | libhunt.com/r/volnux | 2025-11-19
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Project mention: Launch HN: BrowserBook (YC F24) – IDE for deterministic browser automation | news.ycombinator.com | 2025-12-11
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coze-studio
An AI agent development platform with all-in-one visual tools, simplifying agent creation, debugging, and deployment like never before. Coze your way to AI Agent creation.
Project mention: coze-studio VS astron-agent - a user suggested alternative | libhunt.com/r/coze-studio | 2025-10-29 -
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Argo has a CLI, which provides a convenient interface for submitting, monitoring, and recording your workflows. You can download the CLI from GitHub Releases. Use the version that matches the Argo release installed in your Kubernetes cluster.
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I used Dagster, which integrates with dbt nicely (see the point above about how it automagically pulls in documentation). It understands the models and dependencies, and orchestrates everything nicely. It tracks executions and shows you runtimes.
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incubator-dolphinscheduler
Apache DolphinScheduler is the modern data orchestration platform. Agile to create high performance workflow with low-code
Project mention: Inside DolphinScheduler’s May 2026 Release: Better Failover, Stronger Security, and More Reliable Plugins | dev.to | 2026-06-05Related PR: https://github.com/apache/dolphinscheduler/pull/18207
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automatisch
The open source Zapier alternative. Build workflow automation without spending time and money.
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git submodule add https://github.com/The-Pocket/PocketFlow.git vendor/pocketflow
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Flowable (V6)
A compact and highly efficient workflow and Business Process Management (BPM) platform for developers, system admins and business users.
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flowgram.ai
FlowGram is an extensible workflow development framework with built-in canvas, form, variable, and materials that helps developers build AI workflow platforms faster and simpler.
Project mention: Introduction to FlowGram.AI: An open-source front-end flow building engine | dev.to | 2025-07-15Github: https://github.com/bytedance/flowgram.ai (Looking for attention and sharing) Official website: https://flowgram.ai/
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Workflow discussion
Workflow related posts
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I built a React circuit editor in a day with Workflow Builder
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Tools I'm Using in 2026 (and what I've stopped using from 2025)
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I built Mimik: an open-source Chrome extension that auto-captures browser workflows into step-by-step guides
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DAG Workflow Engine
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Durable queues, streams, pub/sub, and a cron scheduler – inside your SQLite file
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Show HN: ByteChef – Open-source alternative to Zapier/n8n with Apache 2.0 core
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Claude Code Routines
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A note from our sponsor - SaaSHub
www.saashub.com | 8 Jun 2026
Index
What are some of the best open-source Workflow projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | n8n | 191,300 |
| 2 | dify | 143,689 |
| 3 | Airflow | 45,711 |
| 4 | xyflow | 36,903 |
| 5 | xstate | 29,671 |
| 6 | FastGPT | 28,275 |
| 7 | kestra | 26,974 |
| 8 | activepieces | 22,571 |
| 9 | Prefect | 22,528 |
| 10 | skyvern | 21,832 |
| 11 | automa | 21,380 |
| 12 | coze-studio | 20,936 |
| 13 | Taipy | 19,227 |
| 14 | argo | 16,743 |
| 15 | dagster | 15,619 |
| 16 | lint-staged | 14,647 |
| 17 | incubator-dolphinscheduler | 14,293 |
| 18 | automatisch | 13,852 |
| 19 | pipedream | 11,440 |
| 20 | PocketFlow | 10,713 |
| 21 | Flowable (V6) | 9,288 |
| 22 | PDM | 8,641 |
| 23 | flowgram.ai | 8,098 |
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