One of the most popular categories of BlackBerry OS 7 apps was productivity tools. Apps like BlackBerry Enterprise Server (BES) and Good for Enterprise provided secure email and data management solutions for businesses. Other popular productivity apps included Evernote, Dropbox, and LinkedIn, which allowed users to stay organized, collaborate with colleagues, and access their professional networks on the go.
The "killer app" of the platform. It offered real-time read receipts and PIN-based networking long before modern messaging apps took over the market. Social Feeds: blackberry os 7 apps