Virtually all CMSes can be used to build basic sites. Some come with steeper learning curves than others, some with less flexibility than others, but those are subjective measures.
When evaluating a platform for your website, you should consider whether or not there is strong leadership and direction for the software, whether or not there is enough traction to ensure ongoing developemnt for the next 5+ years, and if it will be adaptable for current and future needs. You should also consider scalability, security, accessibility, ecosystem health and User Experience.
| Functional Area | MODX Revolution | WordPress | Drupal | Joomla |
|---|---|---|---|---|
| Reported Security Vulnerabilities | 29 | 1,613 | 1,035 | 989 |
| PDO-based Database Access | Yes | No | Yes | No |
| Easily Use Any Template Method You Wish | Yes | No | No | No |
| Estimated Number of Plugins/Extras/Modules | 689 | 44,363 | 34,024 | 7,754 |
| Commercially Licensed Extras | Yes | Yes | Yes | Yes |
| Hostile to Commercial Licenses | No | Yes | No | No |
| Year Founded | 2004 | 2003 | 2001 | 2005 |
| Fork (linked if not defunct) | Etomite | b2evolution | No | Mambo |
| Forks | No | No | Backdrop CMS | No |
| Founders still actively involved | Yes | Yes | Yes | No |
| Governance | Founders | Foundation | Foundation | Foundation |
| Final Decision Making | Founders | Matt Mullenweg | Dries Buytart | By Committee |
| Commercial Support from the Source | MODX | No | via Acquia | No |
| Managed/Premium Hosting from the Source | MODX Cloud | WordPress VIP | via Acquia | No |
| High Performance Caching in the Core | Yes | No | No | ? |
| Easily Scale across Multiple Servers | Yes | No | No | ? |
| Reliable for Multi-site | Yes | No | Yes | ? |
| Accessible Manager | Add-on | Yes | ? | No |
| Accessibility Statement | Yes | Yes | ? | ? |