AppExchange is the final piece of technology that differentiates the Force.com platform to other platforms. The AppExchange is a directory where Web applications built on the Force.com platform are available for customers of Salesforce to demonstration , evaluation, and install. Developers can submit their applications for registration on the AppExchange directory if they want to share them with the community. There you will see hundreds of innovative and exciting applications that exist today, including everything from payroll management to telephony integration, service and support surveys, adoption dashboards, and beyond. Some of these applications have been created internally for Salesforce , but most are built by partners and individual developers who have chosen to take advantage of the Force.com platform .