idea
JetBrains Java and Kotlin IDE.
TLDR
Open the current directory in IntelliJ IDEA
$ idea [path/to/directory]
Open a specific file or directory in IntelliJ IDEA
$ idea [path/to/file_or_directory]
Open the diff viewer to compare up to 3 files
$ idea diff [path/to/file1 path/to/file2 path/to/optional_file3]
Open the merge dialog to perform a two-way file merge
$ idea merge [path/to/file1] [path/to/file2] [path/to/output]
Run code inspections on a project
$ idea inspect [path/to/project_directory] [path/to/inspection_profile] [path/to/output]