Built-in Applications:  

Expression Engine offers many great applications built-in to the core files. There are also 22 add-on modules and more than 100 plugins to be added to your site with EE. The wiki capabilities are really sweet and full of possibility depending on your site’s needs and community.

The photo gallery application is useable and useful – allowing image uploading, resizing and thumbnail creation all within the CMS.

A common question new users ask when discovering EE content management system software is whether to use multiple weblogs or categories to organize their site. You will need to consider this carefully before setting up your site, and the answer depends on how you want the site to work. For example, if your sections might require custom types of data fields, you should use a weblog. If you need different users or members to have different levels of access to sections (restricting certain members to just be able to post in their specific section), again, use a weblog since restricting access to categories is not possible.

Also consider using weblogs if your sections require unique layouts or appearances. The fields in EE are completely customizable in type and number for every blog.
EE features Blogger API – which means you can easily integrate your Blogger entries into your EE CMS.

Security:  

The built-in framework of an Expression Engine CMS will offer you an audit trail, Captcha verifications, content approval, email verification and granular privileges. Login history is also included and the system is SSL compatible.

Management:  

Administrative features include admin logs, site membership, searchable (and search-and-replace content) forums, data export, Blacklist/Whitelist module, SQL and extension manager all come standard with this content management system. In fact, Expression Engine is equipped with almost the full complement of management elements we looked at for content management system software review.

Performance:  

Expression Engine’s dynamic publishing templating model will satisfy those who appreciate the instant gratification of seeing changes and comments appear instantly. The multi-layered system of caching within EE is also a plus because it minimizes reliance on the database for generation.