All tools in the Social Software Matrix have been compared in business use case-, technological- and product categories. A description of all categories is given in the tables below. A summarizing sentence is complemented by a list of crucial features. These descriptions state the most important features that are expected in the different categories from good Social Software Suites. The description are not meant to be strict definitions of the categories but shall give the reader an idea of what each category means and what has been taken into consideration during the evaluation process.