On Wednesday the Google Apps Marketplace had its first birthday. It now features over 300 apps, compared to just 50 when it opened its doors in March 2010.
The Apps Marketplace allows third-party software vendors to tie in their cloud offerings to Google's standard apps, like Gmail, Google Calendar, and Google Docs. The chief benefit is allowing users to sign in just once for all their cloud applications, but applications can share data too--a project management app could access your e-mail contacts, for example, and could let you attach files you've created in Google Docs.
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