What is the best WCM (web content management) & ECM (Eterprise Content management) server ??

Opentext offers a wide range of solutions related to Enterprise Content Management. You can take advantage of their document management solutions, web content management, business process, and so on...

Web content management (WCM) server (also known as CMS) are used to design, implement and administer digital content on the web. .Enterprise Content Management (ECM) is the strategies, methods and tools used to capture, manage, store, preserve, and deliver content and documents related to organizational processes.

Many ECM solutions can help you out,i would recommend OnBase as ECM not WCM.

There is many Content Management System you can say it is strong, such as: Oracle Universal Content Management, or SharePoint Enterprise Document Management, each of these products is very useful when you need track changes or to make an workflow and access control, or any thing you need in Content Management, and each of these products is very useful when you have to Integrate with, Oracle UCM can take you throw web services integration and so many methodology you can use, with very strong development environment, and you can also integrate with SharePoint too with many ways.
So the two Products are very useful to work with, and Integrate as you ask this question from Specialty.
Thank You all...