There are thousands of app which help to make work life easier. Here are few apps, which I like most:
Slack, a messaging free app, brings all our communication together in one place. It’s real-time messaging, archiving and search for modern teams.
Teamwork.com is an easy-to-use online teamwork & project management software application that helps managers, staff, and clients work together more productively online
HootSuite is a platform for managing social media. It’s user interface takes the form of a dashboard, and supports social network integrations for Twitter, Facebook, Instagram, LinkedIn, Google+, YouTube, and many more.
Dropbox, a file hosting service, creates a special folder on the user’s computer, the contents of which are then synchronized to Dropbox’s servers and to other computers and devices that the user has installed Dropbox on, keeping the same files up-to-date on all devices.
5. Google Docs:
Google Docs is a free Web-based application in which documents and spreadsheets can be created, edited and stored online.
Hope this information will help.