OKRs.app - Reach your personal goals with OKRs
Goodreads - See what your friends are reading.
Simple OKR - Track, measure and manage OKRs
LibraryThing - A home for your books.
Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.
GoodBooks.io - Largest curated collection of 8,500+ book recommendations.