Over on Twitter, I asked people to come up with a list of commercial PHP CMS. So, content management systems written in PHP, but not free or open-source — systems you have to pay for to use.
As I suspected, there aren’t many. As of six hours later, we have two (and-a-half):
- Expression Engine, a well-known system priced at $100 – $250.
- Jadu, a system completely unknown to me. I could only find anecdotal pricing, which put it somewhere in the $30,000 range.
- And perhaps we need to count eZ publish? While it’s open-source under the GPL, it does have a commercial option where you can close the source, so it sorta counts. Last time I looked into it, you could close the source with a $7,000/year support subscription, but that’s likely changed since then.