Timothy O'Brien over at OnJava.com is all praises for the Eclipse Callisto Release Candidate. He says he is surprised at the breadth and quality of this release.

"In my own day to day development, I really only touch upon the surface of Eclipse, code, compile, use some of the refactoring capabilities. I haven’t really dug into the profiling and performance monitoring tools. I've always been aware that Eclipse has some solid modeling tools and I’ve dabbled with the reporting stuff in the past, but I always had a terrible time either downloading or installing these components," Timothy says. With Callisto, he found that everything he tried worked without a flaw. Timothy was able to download and continue his development as he had before with minimal interruption. It took about 40 minutes to download all 10 components, and he didn’t find an error dialog or have to perform some work around throughout the entire process, he says.

As far as open source efforts go, Timothy feels the Eclipse Foundation seems to have found the right mix of openness and membership. He highlights the efforts of the foundation in instituting a series of partnerships with organizations that participate in the development of the product. According to Timothy, the foundation differs from other 'open-source' communities in that it is both more open and more focused on software development. "While some might disparage the approach as a corporate driven approach to open source and community, Eclipse feels less like a faceless corporation and more like a consortium of interested parties, and the quality of the releases is proof enough that this model is working," he says.