GitHub Pages

Can be used to build your own personal website, hosted directly from a GitHub repository

SiteServer CMS

It is an open-source, cross-platform, enterprise-grade CMS content management system.

Ghost

It is an open-source blogging platform built on Node.js, featuring an easy-to-use writing interface and experience.

Typecho

Developed based on PHP5, supporting multiple databases, this is a robust, smooth-running, lightweight open-source blogging program.

WordPress

It's an open-source software that lets you build great websites, blogs, or applications.