What is the difference between a JavaBean and a .NET component?

NET is developed in recognition that the future of a significant part of computing business lies in web-based software services, in which components of the software system may reside in different locations in different computers on the internet. Before .NET  distributed component based systems are named COM.

A component is an encapsulation of the software that can stand by itself and can be used by other components , without that components knowing how the functionality of the component was implemented.

JavaBeans is a technology developed by sun-microsystems to support distributed component-based computing using java.

The primary difference between JavaBeans and COM component is that , COM component can be written in variety of programming languages . ie ; they are language neutral.