Not every collaboration platform has an associated native app. Some take the alternative approach of building a special mobile Web site and relying on the smartphone's browser to provide access to the collaboration tools. One advantage of this approach is that it's not (phone) platform-specific: It'll work on iPhones, Android devices, and BlackBerrys. Another is that it's free, since it just uses a phone's built-in capabilities. One example is Socialtext (left), an information sharing and team-management platform. SocialText Mobile detects a mobile browser and directs you to a special mobile interface. Through the mobile interface, you can track team members' activities, read and add comments, and communicate with colleagues through their profiles. Another example is Central Desktop (right), a cloud-based collaboration platform that offers most of the features of the in-house version: shared workspaces with communication and file sharing features. CentralDesktop.MOBI, a third-party Web application, lets you connect to your Central Desktop account by pointing your phone's browser to that address.