Collabtive - Collabtive is a web-based project management software.
Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
greenbox - Greenbox is a powerful, secure, and easy to use application-based document collaboration solution that converts your organization into a green & paperless workplace. It helps to Store, Track, Share and Manage the documents.
Acuity Scheduling - Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Redmine - Flexible project management web application
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.