Podio Project Management
This project management tool includes a set of apps to help to organize and track work, and they can be used as a simple drag and drop interface. Some of its features are: chat, calendar, contacts, file sharing, budgeting, task tracking, reporting, automated workflows, webforms.
Podio also has extensions to connect with third party software like Google suite, Zapier, Mailchimp, Chatgrid, Teamdeck, and more.