Top 17 Data Flow Open-Source Projects

1. n8n

   1 456 193,265 10.0 TypeScript

   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: A year of AI-agent incidents. The model is rarely the bug. | dev.to | 2026-06-19

   n8n issue #25276 documented that after the v2.4.7 → v2.6.3 upgrade, the platform's Vector Store Question Answer tool began generating function-call schemas that both OpenAI and Anthropic rejected outright. OpenAI returned Invalid schema for function 'protocol_knowledge': schema must be a JSON Schema of 'type: "object"', got 'type: "None"'. Anthropic returned tools.0.custom.input_schema.type: Field required. Workflows that had run for months started failing on every call.

2. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

3. react-in-patterns

   2 4 13,590 2.4 JavaScript

   A free book that talks about design patterns/techniques used while developing with React.

   

4. pipedream

   3 10 11,486 10.0 JavaScript

   Connect APIs, remarkably fast. Free for developers.

   

5. flowgram.ai

   4 1 8,128 9.7 TypeScript

   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 | 2025-07-15

   Github: https://github.com/bytedance/flowgram.ai (Looking for attention and sharing) Official website: https://flowgram.ai/

6. fluvio

   5 35 5,234 8.6 Rust

   🦀 event stream processing for developers to collect and transform data in motion to power responsive data intensive applications.

   

7. rulego

   6 0 1,543 9.3 Go

   ⛓️RuleGo is a lightweight, high-performance, embedded, next-generation component orchestration rule engine framework for Go.

   

8. Systemizer

   7 16 1,457 4.1 TypeScript

   A system design tool that allows you to simulate data flow of distributed systems.

   

9. flow-like

   8 1 622 - Rust

   Flow-Like: Strongly Typed Enterprise Scale Workflows. Built for scalability, speed, seamless AI integration and rich customization.

   

   Project mention: Flow-Like – Local-first workflow automation with WASM nodes (Rust) | news.ycombinator.com | 2026-04-02

10. reactpatterns

    9 4 589 5.6

    React patterns & techniques to use in development for React Developer ⚛ .

    

11. redux-first-history

    10 1 454 0.0 TypeScript

    Redux history binding support react-router - @reach/router - wouter - react-location

    

12. ProGraML

    11 1 323 6.5 C++

    A Graph-based Program Representation for Data Flow Analysis and Compiler Optimizations

    

13. flow

    12 1 39 9.0 Rust

    Exploration of a data-flow programming paradigm (by andrewdavidmackenzie)

    

14. tenet

    13 1 37 8.2 Clojure

    A Clojure(Script) library, which helps to create explicit and understandable results to unify and simplify the data flow (by lazy-cat-io)

    

15. Sekoia

    14 4 36 0.0 JavaScript

    Sekoia.js - Reactivity Engine

    

16. bdsim_realtime

    15 1 6 5.0 Python

    Real-time execution and remote monitoring and tuning of BDSim Block-Diagrams for modeling and control of Dynamical Systems

    

17. ExtensibleDataPipeline

    16 1 1 4.9 C#

    Some fun with .NET and Managed Extensibility Framework (MEF)

    

18. cached

    17 0 0 0.0 Haskell

    Write data flows that cache values to disk. Run independant computations in parallel and only recompute what needs to be. (by guillaumecherel)

    

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• A note from our sponsor - SaaSHub
  www.saashub.com | 21 Jun 2026

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