[BookStack](https://www.bookstackapp.com/) is a simple, self-hosted platform for organising and storing information. BookStack is entirely free and open-sourced, as well as MIT licensed. The source is available on [GitHub](https://github.com/BookStackApp/BookStack). In this tutorial, we will install BookStack on a fresh CentOS 7 Vultr instance. - PHP Version 7.0.0 or greater and the following extensions: - `OpenSSL` - `PDO` - `MBstring` - `Tokenizer` - `GD` - `MySQLND` - `Tidy` ......