The Grail Approach

Advantages:

• Minor upgrades can be distributed as patches
• Only need to distribute source
  (to users who have Python)
• No need to send upgrades for each new protocol or HTML feature
  - new extensions can be distributed separately
• Encourages others to develop extensions
  - for private or public use
• Encourages widespread experimentation with new features
  - rather than dependency on browser vendors

• Performance
  - implement selected parts in C
• Everybody can see your source
  - is that really a disadvantage?