pangu
Paranoid text spacing for good readability, to automatically insert whitespace between CJK (Chinese, Japanese, Korean) and half-width characters (alphabetical letters, numerical digits and symbols).
too-wordy
Find wordy or unnecessary passages in your writing
apca-w3
APCA: the Accessible Perceptual Contrast Algorithm, a modern contrast method that improves readability contrast on self-illuminated displays. Developed for the W3C's WCAG 3 and other standards.