TeamWox - TeamWox is a groupware system designed to optimize the business management.
GoodBooks.io - Largest curated collection of 8,500+ book recommendations.
Macroaxis - Educated Diversification
BookAuthority - BookAuthority collects the most recommended books on business, technology and science - as featured on CNN, Inc and Forbes
EspoCRM - EspoCRM is open source CRM (Customer Relationship Management) software that allows you to see, enter and evaluate all your company relationships regardless of the type.
Goodreads - See what your friends are reading.