darhieus,
MyEclipse Blue Edition is the clear alternative to IBM Rational®. It’s a powerful IDE for IBM WebSphere developers with advanced WebSphere- specific features and customized connectors, making MyEclipse Blue Edition the lightweight, powerful solution that keeps today’s discerning IBM shops ahead of the technology curve.
• Compatible with WebSphere 5.x, 6.0, 6.1, 7, 8, 8.5 and WAS Portal Server
• RAD & WSAD Project Support/Migration
• Supports Ajax, JPA, Visual SQL, Spring, Hibernate, Maven and much more for WebSphere.
Here is a list of features supported by MyEclipse and MyEclipse Blue :
https://www.myeclipseide.com/module-htmlpages-display-pid-1.html
Please check the following threads to understand where and how MyEclipse fares better than other IDEs :
http://www.coderanch.com/t/106613/vc/Where-does-MyEclipse-atually-diffrentiates
http://www.coderanch.com/t/106626/vc/Eclipse
Let us know if you have any questions.