eBooks.com - eBooks.com is a leading retailer of ebooks, with a vast range of ebooks from academic, popular and professional publishers.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Kobo Books - Kobo Books is a best in the class eBooks and eReadering apps for many reasons.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Harlequin - Harlequin is a bookstore that sells paper books as well as eBooks. The store mainly deals in the genre of romance novels.
Slack - A messaging app for teams who see through the Earth!