A developer just spotted a very good wiki article:
Inside the article, you may find a very useful freeware called "TaskSpy", which can be used to spy all of the running tasks in the phone. It is a pretty good tool to managing the tasks in the phone (like teminating, finding the process info). At the site, you may also find the source code for the application.
If a developer wants to find a comercial software for managing the processes/tasks in the phone, another tool called "TaskMan" can also be used. You may easily find it on internet by googling it