https://intellij-support.jetbrains.com/hc/en-us/articles/206544519

macOS:

  • Configuration (idea.config.path): ~/Library/Application Support/JetBrains/IntelliJIdea2020.3

  • Plugins (idea.plugins.path): ~/Library/Application Support/JetBrains/IntelliJIdea2020.3/plugins

  • System (idea.system.path): ~/Library/Caches/JetBrains/IntelliJIdea2020.3

  • Logs (idea.log.path): ~/Library/Logs/JetBrains/IntelliJIdea2020.3