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ReadMo - Reading mode with an audio player 📖🎧
PEAR - Connecting newsletters and advertisers 🍐
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.
Newsletter Operating System - All-in-one dashboard to launch & grow your newsletter
Periodical - This application calculates the fertile days according to Knaus-Ogino.
Revue - The easiest way to create and send a curated newsletter