Itexis, software editor, has focused on end to end performances analysis of the application infrastructure from a user perspective, that is performances during test campaigns before application rollout (Load Stress Testing) and performances once the application has gone into production (QoS) 

Itexis has developed two software suites, "AppsLoad for Windows" and "AppsMon for Windows" respectively intended to Load Stress Testing and to Application Monitoring. They support all types of architecture (client/server, Terminal Server, Citrix and Web client), as far as the client interface is under Microsoft Windows.