A11yc Accessibility Check Service
Checker
A11yC - Japanese
A11yC - English
Related
Github Repository of A11yC
WordPress Plugin jwp-a11y (Japanese)
WordPress Plugin jwp-a11y (English)
Study Tool
駒瑠市〜アクセシビリティ上の問題の体験サイト〜
Author
Jidaikobo Inc.