Aviary is available for free through Google Apps Marketplace
Aviary is one of the many companies that have launched their services through the Google Apps Marketplace.
The company is offering integrated services on Google Apps for free.
It can be used with Google Apps for Domains or Google Apps for Enterprise.
Aviary is one of the most feature-rich online image editors in the market today.
Google incidentally recently acquired a rival company Picnik.
Checkout: Aviary is in Google Apps!