ExpressionEngine vs RebelMouse: What are the differences?

Developers describe ExpressionEngine as "Open-Source and feature-rich content management system". It is a flexible, feature-rich, free open-source content management platform that empowers hundreds of thousands of individuals and organizations around the world to easily manage their web site. On the other hand, RebelMouse is detailed as "A publishing platform for distributed properties". It is a creative agency fueled by a publishing platform with deep technology. We blend product and strategy together to move the needle where it matters most — organic traffic and user growth, conversion to loyalty, and revenue success.

ExpressionEngine and RebelMouse belong to "Self-Hosted Blogging / CMS" category of the tech stack.

Some of the features offered by ExpressionEngine are:

• Your site content is stored in channels—flexible data containers with fields for any type of information
• A Template may contain ANYTHING that a webpage might contain: HTML, JavaScript, PHP, whatever
• Live Preview

On the other hand, RebelMouse provides the following key features:

• Social Advertising
• Content Management
• SEO Content Strategy

ExpressionEngine is an open source tool with 189 GitHub stars and 48 GitHub forks. Here's a link to ExpressionEngine's open source repository on GitHub.