What's the difference between Eclipse Packages and Plug-ins?

Question

In Dependencies tab, I have a choice between plug-ins and packages. What\'s the difference between them? For org.eclipse.compare, I have it in imported package

Answer 1

Eclipse plugins is something like extension to the IDE itself. But imported packages are actually packages that you'll use in your current project.

One is for development IDE another is for the project you are coding.