[kevo1ution]

Intellij community edition is open source, but not the enterprise version. However, CE is pretty feature rich with a ton of users and if you're targeting indie developers, most are on CE anyways. I'd say if you do Intellij, you have to be in for the long game to build up to enterprise, but its doable.

[bilekas]

That's interesting actually, I didn't know they even had a community edition but as I am reading anyway it seem it supports only Android, Swing, and JavaFX. That's quite a limitation no?