Various companies that provide EnterpriseApplicationIntegration tools. Feel free to add or critique as needed. 1. VitriaTechnology 1. WebMethods 1. TibcoSoftware [http://www.tibco.com] 1. SunForteFusion 1. MicrosoftCorporation BizTalk 1. iWay Software(an InformationBuilders company) 1. http://seebeyond.com SeeBeyond 1. http://sonicsoftware.com SonicSoftware IONA Software [http://www.iona.com]