What is Ghost?
Ghost is an Open Source software project. What does that mean, exactly?
Firstly: It means that the Ghost application is free. Free to use, free to modify, free to share, free to redistribute. You can do anything you like with the software, without legal restriction. When you download a copy of Ghost, you own it. It’s completely yours.
Secondly: It means that Ghost is created almost entirely by volunteers. The project is organised and run by a small, Non-Profit Organisation called the Ghost Foundation – but it is developed in public, by a large group of contributors all over the world who donate their time and skills to creating a blogging platform for everyone. You can help!
Ghost is an application which is created for and made possible by its community of users.
How to Install Ghost by HowtoForge.