Hi there!

My name is Koen van Gilst and I'm a JavaScript developer who loves creating funny Twitter bots, useful web apps for translators and other creative stuff.

Have a look at my profile if you're interested in working with me. Or else feel free to browse through my experiments, projects and tutorials below.

You can also find me on Github, LinkedIn and Twitter. Or send me an email.

Have fun!

Faster Than Max

Are you faster than Max Verstappen? Test your reaction speed with this iPhone app. Simple React Native iOS app. [2017]

Open in App Store + source

Star Wars or Star Trek?

Why not both? Using just CSS and a bit of JavaScript I recreated these classic science fiction intro's. [2017]

Star Trek + source
Star Wars + source

API Testing with Jest

Jest is a great JavaScript testing framework by Facebook. It’s often used for testing React components, but it’s also a pretty good general purpose testing framework. Appeared in Hackernoon [2017].

Read it here

Generating PDF's with Node

A fun little Node tutorial I wrote on how to generate PDF's from a web form using Express and Node. You can easily deploy it with Now. Appeared in Node Weekly on November 10th [2016].

Read it here

Shortcut Trainer

Quickly learn the 10 most commonly used keyboard shortcuts for the translation CAT tool MemoQ. Weekend project using React. Source code. [2016]


Rush hour timelapse

A Twitter bot that creates daily timelapse videos of the traffic jams in The Netherlands. No longer active, but you can still see some of the old timelapses. [2016]

@altijdfiles + source

Term Search

A terminology search engine for translators. Currently only German-Dutch terms. Work in progress. [2016]

Technologies: NodeJS, Express, MongoDB, Loopback, ReactJS.

Visit website + source

Help Terence!

A Twitter bot raising emoji money for his trip around the world. Fun little experiment with social media and Twitter bots. [2016]

Technologies used: Express, MongoDB.

@helpTerence + source

Word to Line Prices

A simple web app for translators that converts a price per word to a price per standard line (55 characters). [2016]

Visit the app + source

Wikipedia edits by the Dutch government

Twitter bot inspired by @congressedits that monitors and Tweets any edits made to Wikipedia by the Dutch government. [2013]

@OverheidEdits + source

Dawkins' Trees

For this web app I've tried to recreate (in part) the program Richard Dawkins describes in his book The Blind Watchmaker. [2013]