Every week I hear about someone choosing WordPress over Drupal (or vice versus). While there are certainly differences between the two platforms, they are more alike than people typically care to admit:

• Both are used as content management systems.
• Both are written in PHP
• Both are optimized for the LAMP stack.
• Both are free open source.
• Both are supported by massive and highly active communities
• Both are significantly better than the traditional closed source alternatives that are still entrenched in the enterprise.

For the visually inclined the overlap of just the LAMP stack is shown here:

• Read more