Open-source API and extension tools

• Google Wave is open-source, so developers can make variants of it.
• Waves can be embedded into a web page, potentially allowing blog articles, and the associated conversations, to exist simultaneously on the web and in your wave client.
  
• Google facilitates Wave "robots" which are automated participants in waves, with the ability to automatically perform actions in response to certain events. For example, they might publish a wave to a blog, and then publish the blog version's comments to the wave.
• "Gadgets" can be placed inside waves; for example games and mini-tools.