Hansson noted that JetBrains is one of a growing list of companies endorsing Ruby on Rails.

"There's a flurry of activity in the Rails ecosystem. For example, we have big companies like IBM stepping up to officially support the platform by developing their own database adapter for connecting DB2 and Rails. And smaller companies, like FiveRuns, are doing systems monitoring for Rails," Hansson said.

The Ruby on Rails community welcomes commercial support, he said.

"Rails has always been a community that supported commercial support. Just because we're big believers in open source infrastructure' doesn't mean we have to be high-strung opponents of commercial' developments as well. Quite the contrary," Hansson said.

A JetBrains blog about the Ruby plug-in is accessible .