Isaac Povey

While it won't detect events as they happen a good stop gap would be to define your infrastructure config using terraform. You can then periodically run the terraform config against your environment and alert if there are any changes.

IntelliJ really is the best for Java, I switched from eclipse years ago and never looked back. As for javascript, python and angular either using the standalone products from jetbrains (pycharm for python, webstorm for js) or installing the relevant plugins for InteliJ will be your best bet. Pycharm etc. are really just InteliJ with some additional plugins installed.