ContextLookup is a Blackberry app that adds a "Lookup Contact" menu item to the e-mail view screen. You can choose any address field from the email and look it up in the corporate address book, provided your Blackberry is connected.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.