MacOS system extension that allows applications to pass audio to other applications. Soundflower works on macOS Catalina.

Source Han Code JP | 源ノ角ゴシック Code

Copy Syntax Highlight for OS X is an OS X service which copies the selected text to the clipboard, with proper syntax highlighting for the given language.

Finder Toolbar app to open the current directory in the Terminal

An awesome code differencing tool

Terminal-based progress bar for Java / JVM