In simple words, cloud-based software is a service used over the Internet. There’s no need to install anything on your computer, you can access from any computer and there’s free and paid ones. Here are the best options for your venture, business or studies:
Google Apps: A set of tools based in Google services: Gmail, Docs, Calendar, Drive, etc, which help to work in sync all the information with a single account.
Basecamp: This tool allows you to work as if you were face to face with your team. You can get lists, administration and monitoring of projects, assigning tasks to members of teams, among others.
WordPress: It is as accessible and easy to use for websites and blogs. It offers free templates to customize your website and many tools that allow you to analyze statistics and the impact of what you're doing.
Zendesk: A service for providing customer service. It works through the ticket system, that is, if the customer has a question about a product and service, creates a ticket, and it is served by the staff of the company through various means.
Hootsuite: It is an excellent choice when it comes to managing social networks like Facebook, Twitter, Instagram and YouTube.