SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
GoodBooks.io - Largest curated collection of 8,500+ book recommendations.
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
Goodreads - See what your friends are reading.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
LibraryThing - A home for your books.