Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Quest Software (Quest Software, Inc.) (NASDAQ: QSFT) is a computer software manufacturer, headquartered in Aliso Viejo, California and founded in 1987. Quest develops, sells, and supports database management, Windows management, end-user service monitoring (Foglight products), application management and virtualization management software products. Its products enable users to develop, deploy, and manage packaged and custom software applications, as well as associated software infrastructure components, such as databases, application servers, operating systems and hypervisors. The company also provides consulting, training, and support services. Quest sells its products and services through its direct sales organization as well as through a variety of partners and resellers worldwide. Quest''s virtualization business is serviced primarily through its wholly owned subsidiaries Vizioncore and Provision Networks.