I am looking for an alternative IDE, having been using Atom for a while now and had been a Jetbrains customer for few years. Time to switch IDE again and would like to know which is your favorite open source IDE ?
I know you're looking for open source in particular but I'm a PyCharm convert from Atom / Nuclide / Atom IDE and couldn't be happier. Atom didn't come close in terms of functionality, even with a million plugins. There was also a lot more fiddling to get it to work the way I wanted whereas PyCharm generally just does the right thing (though it's very customizable).
Keybinders dream. Custom functions easy to whip up and assign to a key. It has a few arcane keybind ideas like hydra, that aren't even on the radar of other IDEs. The hydra takes vim, spanks it, and sends it to bed.
The place Emacs traditionally falls short as an IDE is intelligent code completion. But with LSP this will get better.
Jetbrains IDEs are all fantastic. I've considered switching to VS Code because I like its declarative configuration, but I'm too used to Jetbrains products to switch right now. Plus their database browser is excellent.
VS Code is very different from Atom, though, so I wouldn't lump them together.
Edit: sorry, I missed the open-source requirement. But I stand by my recommendations. There just aren't that many great IDEs out there.
it depends on which platform and language you develop, but for a java IDE, IntelliJ fly circles around Eclipse or Netbeans, in matters of performance and usability.
Even the dumbed down IntelliJ-CE is a better alternative, until you stumble on the lack of Spring integrations.
( _IntelliJ IDEA Community Edition is the open source version of IntelliJ IDEA_ from http://www.jetbrains.org/pages/viewpage.action?pageId=983211 )
for everything else, Emacs ( spacemacs ) will suffice.
( if the open source requirement is removed, i used visual slickedit for many years, for many projects, before IntelliJ ).
