Is there a keyboard layout that is better than Qzerty?

For the PC - probably not.
However, we are now well and truly in the post-PC era (still lots of users, but sales of both laptops and PCs are in permanent decline).

For the touchscreen era - QWERTY/AZERTY/QWERTZ is nothing short of a usability nightmare - error rates are up, and speeds are way, way down.

The reason?
QWERTY was designed as:

• a piece of desk-bound furniture
• with tactile buttons
• to be operated with both hands
• and all 10 fingers
• while seated
• following a lengthy training period
  

Touchscreen keyboards are:

• go-anywhere devices
• with touch-sensitive buttons
• to be held in the hand
• and operated with one (or maybe 2) fingers/thumbs
• while wandering through a crowded shopping centre
• with no training whatsoever
  

And look at QWERTY on a touchscreen:

• tiny, smaller, than your fingertip keys
• square keys (ever met anyone with square fingertips?)
• all bunched right next to each other
  

It's nothing short of a usability nightmare.

A good touchscreen keyboard should be:

• Fingertip friendly
  
• Easy to learn
• Easy to navigate
• Adaptable to as many different styles of text entry as possible:
  • one finger or one thumb
  • two thumbs
  • all five fingers (for tablets)

To meet these challenges, we've developed a touchscreen solution called Dextr: