JDeveloper
From APIDesign
JDeveloper is the primary IDE for support of Oracle non-open source technologies (like ADF). I really like JDeveloper's support for working with XML, it is much better than the one we offer in NetBeans.
When we learned that Sun was going to be acquired by Oracle in April 2009 we knew we want to change NetBeans to get ready to be acquired. We started to speculate what could make NetBeans attractive for Oracle. I really mean speculate as up until first quarter of 2011 (when the acquisition was approved by Europian Commission) there was no signals from Oracle to help us understand what way to improve NetBeans. Tough situation. Moreover complicated by the fact that people around were fired few times and those who stays had little trust in the future.