I am a GlassFish developer, so my opinion can be considered biased. But I want to draw your attention to a very important issue of using an open source software: the quality of support provided to the end users. [b]GlassFish developers play a very active role in supporting the community for free[/b] and so do our users. It's a community that's growing very fast. There are various kinds of paid support options as well, but I am talking about the free support that a user gets in our forums and aliases. We also hold regular teleconferences with our external users where we listen to the feedback from them.
-- Sahoo
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