The comments to my posting about Ruby on Rails IDEs on Monday have reminded me about other free options for Ruby on Rails development. First, there's NetBeans 6.0. I didn't really think about that when I was writing, because the current version of NetBeans, 5.5.1, doesn't have Ruby support. NetBeans 6.0 is at Milestone 9; the Full version (not the Basic or Standard versions) has Ruby support. NetB The comments to my posting about Ruby on Rails IDEs on Monday have reminded me about other free options for Ruby on Rails development. First, there’s NetBeans 6.0. I didn’t really think about that when I was writing, because the current version of NetBeans, 5.5.1, doesn’t have Ruby support. NetBeans 6.0 is at Milestone 9; the Full version (not the Basic or Standard versions) has Ruby support. NetBeans is free and Open Source. I haven’t tried NetBeans 6.0 M9 myself: I’ve been waiting for the release version. I’d love to hear what others think, however.Second, Paul Colton would like you to know that “RadRails is now officially called ‘Aptana RadRails’ and it is open source and free and will remain that way. Aptana RadRails also fully supports debugging.”I have been able to download and install Aptana myself, but when I try to install the Ruby on Rails support I get an exception. I’ll be working through this problem with the Aptana people.Third, Ruby In Steel has a free Personal Edition available. The differences between the free Personal Edition and the Developer Edition are listed here. The biggest differences in my mind are two features in the Developer Edition: the fast debugger, and the IntelliSense support.Finally, even though no one has reminded me, I should mention that the Komodo IDE also has a free sibling, Komodo Edit. The differences between Komodo Edit and Komodo IDE are listed here. Software Development