Willem Guensberg

A reminder for your messenger - now on Android

Learn to sleep better for a healthier & productive life

The security checklist all CTOs should follow

Connect with your customers through different messaging apps

Because a night out anywhere is better with a local

Discover great people to live with

Swap your seat on the fly.

Power your app with Waze data

A humor-based website that gives random startup advice.

Share products you use at work,explore what others are using

Turn millions of Web pages into your own visualizations

A small app that boosts your Mac's battery by 20%

Personalized (bulk) email has never been this easy

Taking activity tracking to the next level with the iPhone 6

Meet the people on your flight

Rent or list bicycles. Safe, easy and insured.

Super simple payment. Blockchain-based.

See new people and discover your true glimps.