It's hard to explain where ExpressionEngine sits in the world of commercial and open-source software. It's a bit of both. On the one hand, the base code is built on CodeIgniter - an open-source PHP framework (developed by the same company). On the other hand, ExpressionEngine itself is commercial and costs $299+ (£185) (depending on which features you also buy).
There is also a free, limited version for websites that "do not engage in commercial activity". And, if you use that version, you must carry a "powered by ExpressionEngine" credit on your site. Read the full review below.
We build ExpressionEngine websites. Have a friendly conversation with us about design, development, support and management of your ExpressionEngine website.
Complete the short form below and we'll get in touch with you to talk about your ExpressionEngine website requirements.
Community support: Yes
Database: MySQL 5.0.3
Language: PHP 5.3.10+
Licence: Open Source / Commercial