A collection of useful tools.

Products

• Numberle

  Daily puzzle

  Guess the daily five-digit number in six attempts, using colour clues to find your way.

  
  Play Numberle

• PDF

  Document editor

  Edit text, add images, and organise PDF pages directly in your browser.

  
  Open PDF editor

• Miki’s Molecule

  Chemistry workspace

  Draw organic molecules and explore their properties and predicted NMR spectra.

  
  Open Miki’s Molecule

• Bonusbuur

  Supermarket offers

  Compare selected Dutch supermarket offers and put together your shopping list.

  
  Open Bonusbuur