MogTagger is a transmog organization tool that lets you create custom tags and apply them to appearances.
You can use filters to include appearances with specific tags, exclude appearances with specific tags, or require multiple tags to be present before an appearance is shown.
Tagging starts in the Appearances window, and filters can also be used in the Transmog window.
MogTagger includes a hand-curated, but incomplete, default tag collection covering some colors, item shapes, and model types. Not all default tags may be correct.
Default tags may be expanded, adjusted, and improved in future updates.