K2 Article Manager Plugin
All Joomla! CCK's (Content Construction Kits) such as Seblod, Form2Content or K2 have the same problem. When you click on the Content > Article Manager, you end up in com_content and you panic because you see no articles.
Of course, all articles are in another component where you can get by navigating through Components > K2 > Items in case of K2. It is confusing, especially for your non-IT clients.
Therefore, we created a smart plugin that replaces all com_content links in Joomla! administration with com_k2 links and you can use the Article manager and Category manager to get into K2 items and K2 categories. How cool is that?