isort automatically sorts and organizes import statements in Ruby files. It groups imports into sections (stdlib, third-party, first-party, local), sorts alphabetically within each section, removes duplicates, and preserves comments. Supports require, require_relative, include, extend, autoload, and using statements. Features include: check mode for CI integration, diff preview, atomic mode with syntax validation, skip directives for fine-grained control, and recursive directory processing. Inspired by Python's isort.