Google just launched a new Google Apps feature called Google Apps Marketplace where users can discover and deploy third-party cloud applications that integrate with their existing Google Apps accounts.
Give the video above a watch for a full overview of how Google Apps Marketplace apps work, or, summed up from the Google Apps Marketplace homepage:
The Google Apps Marketplace offers products and services designed for Google users, including installable apps that integrate directly with Google Apps. Installable apps are easy to use because they include single sign-on, Google's universal navigation, and some even include features that integrate with your domain's data.
We've detailed how to trick out Google Apps in the past, but the Apps Marketplace brings an entirely new set of potentially useful tools to your Google Apps account — everything from accounting and finance apps to project and customer management. It might be overkill for the regular user, but if you're a business running on Google Apps, the integration that these tools provide with Google tools like Mail, Calendar, Docs and Contacts might be well worth it for the right app. (Note: Most of the apps look like they come with a recurring subscription fee.)
We've been paging through the offerings since the site went up, but if you stumble onto a particularly snazzy looking Marketplace app, share a link in the comments.