Most people are going to prefer Emacs, but lots of people happily use Eclipse. Light Table is also a budding option. Vim is also fine if you're into that. ST2 c

Most people are going to prefer Emacs, but lots of people happily use Eclipse. Light Table is also a budding option. Vim is also fine if you're into that. ST2 can suffice with the https://github.com/odyssomay/sublime-lispindent https://github.com/odyssomay/sublime-lispindent plugin.