POLAR - A powerful document manager for Mac, Windows, and Linux for managing web content, books, and notes and supports tagging, annotation, highlighting and keeps track of your reading progress.
Actually Read It Later - Save articles for reading later
Periodical - This application calculates the fertile days according to Knaus-Ogino.
Pocket Explore - A human curated version of the web
ReadingGoals - Tackle your "Read Later" bookmark debt in 2020
Pocket Listen - Reading is hard. Listen to articles instead.