Kindle Robot - Send books to Kindle via a Telegram bot 📚🤖
OneSignal - Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
Eplee - A simple and beautiful open-source ePub reader
Truepush - Unleash limitless possibilities with Truepush and save up to $600 monthly. Free up to 10K Subscribers on all features.
FolioReaderKit - A Swift ePub reader and parser framework for iOS.
PushCrew - Push Notifications for Websites