Pry

Pry allows browsing Ruby and C source code with syntax highlighting and on-demand documentation, using commands like show-source, which IRB cannot do.

With binding.pry, developers can invoke interactive sessions at any point in a running program, enabling live debugging and hot-patching without restarting.

Inspired by IPython and Smalltalk, Pry's command syntax supports options and grep-like filtering, making complex tasks like method exploration efficient.

Execute shell commands, edit files, and run tools like git directly from Pry using dot-prefixed lines, blending system operations with Ruby development.