Eclipse
Used by 14 peopleeclipse.org ↗

“I prefer not to use the TI-sanctioned Eclipse-based IDE.”
Brandon Lucia Interview, Computer researcher, musician (netcat) · via Uses This 
“This week I tried to use Eclipse again for Scala development.”
Chad Fowler Interview, Programmer, musician, author, speaker · via Uses This 
“I like Eclipse too, but IDEA's refactoring support is a better fit for the way I program.”
Matthew Mckeon Interview, Developer (IBM Visual Communication Lab) · via Uses This