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@josdejong

Jos de Jong

josdejong
Rotterdam

I'm Jos de Jong, a passionate programmer. In my spare time I love to work on the open source projects jsoneditor and mathjs and some other small projects. I started them long time ago because I needed them myself in my daily life as programmer and engineer. And this is what keeps me motivated: these projects solve an actual need of developers like me, working with JSON data on a daily basis, or working with advanced mathematics in a modern web application. The projects are in good shape, and there is plenty of ideas and improvements just waiting to be implemented.

If you care about jsoneditor or mathjs like I do, please support me via Github Sponsors :)

Current sponsors 14

@AJamesPhillips
@dvd101x
@syntaxfm
@farley13
@NullDev
@roboflow
@tiberhealth
@MRumpold
@NicolasCARPi
@rdnt
@octue
@radianrad
@sathoro
@LambdaTest-Inc
Past sponsors 34
@rual
@grinry
@xiaohk
@codecov
@FrontendMasters
@georgemarklow
Private Sponsor
@cshaa
@parsify-dev
@mitrakov
@szul
@semasquare
@mattvague
@tronfamily
@mariusmitrofan
@le-cardinal
@gdaroch
@joelpalmer

Featured work

  1. josdejong/mathjs

    An extensive math library for JavaScript and Node.js

    JavaScript 14,908
  2. josdejong/jsoneditor

    A web-based tool to view, edit, format, and validate JSON

    JavaScript 12,098
  3. josdejong/workerpool

    Offload tasks to a pool of workers on node.js and in the browser

    JavaScript 2,251
  4. josdejong/lossless-json

    Parse JSON without risk of losing numeric information

    TypeScript 460
  5. josdejong/ducktype

    Flexible data validation using a ducktype interface. For JavaScript and Node.js.

    JavaScript 91
  6. josdejong/propagating-hammerjs

    Extend hammer.js with event propagation

    JavaScript 41

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Select a tier

$ a month

You'll receive any rewards listed in the $2 monthly tier. Additionally, a Public Sponsor achievement will be added to your profile.

$1 a month

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Math.js supporter

You regularly use mathjs and appreciate it a lot.

$2 a month

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JSONEditor supporter

You regularly use JSONEditor and appreciate it a lot.

$5 a month

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Math.js BIG fan

You're simply a big fan of mathjs. Keep up the good work, mathjs rocks 🚀

$6 a month

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JSONEditor BIG fan

You're simply a big fan of JSONEditor. Keep up the good work, JSONEditor is awesome 😎

$100 a month

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Math.js sponsor

You seriously want to sponsor mathjs. You'll get your logo on the README of the project.

$200 a month

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Sponsor multiple projects

You want to sponsor at least two of the projects developed and maintained by Jos de Jong, such as mathjs and jsoneditor. You'll get your logo on the README of two projects which you can select yourself.