Flow.org Alternatives

Flow.org is described as 'Flow is a static type checker for JavaScript that we built at Facebook. The overall mission of Flow is to deliver an immersive coding experience for JavaScript developers—a fast edit-refresh cycle—even as the codebase evolves and grows' and is an website in the development category. There are more than 10 alternatives to Flow.org, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and BSD apps. The best Flow.org alternative is JavaScript, which is both free and Open Source. Other great sites and apps similar to Flow.org are TypeScript, Google Chrome Developer Tools, Firefox Developer Tools and Web Developer.

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Alternatives list

  1. JavaScript icon

    JavaScript

     629 likes
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    JavaScript (sometimes shortened to JS) is a lightweight, interpreted, object-oriented language with first-class functions, most known as the scripting language for Web pages, but also used in many non-browser environments.

    60 JavaScript alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Chrome OS
    • BSD
    • iPad
    • AROS
    • Haiku
    JavaScript screenshot 1
     

    • JavaScript is the most popular Web-based, Windows, Android & Mac alternative to Flow.org.

    • JavaScript is the most popular Open Source & free alternative to Flow.org.

    • JavaScript is Free and Open SourceFlow.org is also Free and Open Source
    • JavaScript is LightweightFlow.org is not according to our users
  2. TypeScript icon

    TypeScript

     65 likes
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    TypeScript is a language for application-scale JavaScript development. It is a typed superset of JavaScript that compiles to plain JavaScript in any browser, any host, any OS and it is Open Source.

    15 TypeScript alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • JavaScript
    • Node.JS
    TypeScript screenshot 1
     

    • TypeScript is the most popular Self-Hosted alternative to Flow.org.

    • TypeScript is Free and Open SourceFlow.org is also Free and Open Source
  4. Google Chrome Developer Tools icon

    Google Chrome Developer Tools

     157 likes
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    The Google Chrome Developer Tools provide an integrated environment for debugging, optimizing, and understanding a web application, or website, running in Google Chrome. The developer tools are developed partly through the WebKit open source project, where the tools are called...

    16 Google Chrome Developer Tools alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Google Chrome
    Google Chrome Developer Tools screenshot 1
     
  6. Web Developer icon

    Web Developer

     48 likes
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    The Web Developer extension adds various web developer tools to a browser. The extension is available for Chrome, Edge, Firefox, and Opera, and will run on any platform that these browsers support including Windows, macOS and Linux.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Google Chrome
    • Mozilla Firefox
    • Microsoft Edge
    • Opera
    Web Developer screenshot 1
     
  7. B4X icon

    B4X

     51 likes
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    Cross platform development tools for native iOS, Android, desktop and server applications. B4X is a Rapid Application Development (RAD) tool for real world apps. The programming language is a modern version of Visual Basic.

    71 B4X alternatives

    Cost / License

    • Freemium (Pay once)
    • Proprietary

    Application type

    Platforms

    • Windows
    • Android
    • iPhone
    • Android Tablet
    • iPad
    IDE screenshot
     

    • B4X is the most popular Android Tablet alternative to Flow.org.

    • B4X is Freemium and ProprietaryFlow.org is Free and Open Source
  9. ReScript icon

    ReScript

     2 likes
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    ReScript is a robustly typed language that compiles to efficient and human-readable JavaScript. It comes with a lightning fast compiler toolchain that scales to any codebase size.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • JavaScript
    • Self-Hosted
    • Node.JS
    • Mac
    • Linux
    • Windows
    • BSD
    • Visual Studio Code
    ReScript screenshot 1
     
  10. Bosque icon

    Bosque

     3 likes
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    The Bosque programming language is an experiment in regularized design for a machine assisted rapid and reliable software development lifecycle.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • BSD
    Bosque screenshot 1
     
  11. MicroPython icon

    MicroPython

     1 like
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    MicroPython aims to implement the Python 3.4 standard (with selected features from later versions) with respect to language syntax, and most of the features of MicroPython are identical to those described by the “Language Reference” documentation at docs.python.org.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • BSD
    • Self-Hosted
    • JavaScript
    • FreeBSD
    • OpenBSD
    MicroPython on Unicorn
     
  12. SplineTech Javascript Debugger icon

    SplineTech Javascript Debugger

     5 likes
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    SplineTech JavaScript Debugger is the fastest independent standalone JavaScript Debugger that enables you to debug JavaScript for IE completely independently of any add-ons, plug-ins, Java or any other third-party proprietary tools.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Windows
    SplineTech Javascript Debugger screenshot 1
     

    • SplineTech Javascript Debugger is the most popular commercial alternative to Flow.org.

    • SplineTech Javascript Debugger is Paid and ProprietaryFlow.org is Free and Open Source
  14. Javascript Debugger (Venkman) icon

    Javascript Debugger (Venkman)

     1 like
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    Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Firefox
    Javascript Debugger (Venkman) screenshot 1
     
12 of 15 Flow.org alternatives