ProactiveNet, Inc., a leading provider of end-to-end performance management solutions for online applications, today announced the appointment of 19-year Internet veteran DAVID LANGLAIS as Vice President of Marketing. A successful executive in companies at various stages of sales, marketing and product development, Langlais is charged with expanding ProactiveNet's leadership position in performance management of web- and browser-based applications and their associated infrastructure. Langlais has been a principal developer of sales, marketing and product strategies for Finisar Systems, Pixera Corporation and The Wollongong Group.