A shell written in Ruby with extensive tab completions, aliases/nicks, history, syntax highlighting, theming, auto-cd, auto-opening files and more. UPDATE v2.11.0: Major TAB completion overhaul! Smart context-aware completion (cd shows only dirs, vim shows only files), frequency-based command scoring, fuzzy matching with fallback, configurable completion options, performance optimizations with executable caching, environment variable completion, better error handling, and much more. A significant improvement to daily shell usage!