Chyrp appears to be a light weight blogging engine, done in PHP/mySQL (some Ajax) and is “loosely based on the MVC design pattern.”. It’s been recently upgraded. I don’t like the fact you need to give an email for a live demo, but at least you can download the code.

Chyrp is a blogging engine designed to be very lightweight while retaining functionality. It is driven by PHP and MySQL (with some AJAX thrown in), and has a pimpin’ theme and module engine, so you can personalize it however you want.

John Gruber picked up on this (and so did i) that Cameron Hunt switched from Tumblr to Chyrp, an interesting endorsement.

Smashing Magazine has another list post of software frameworks covering most of the popular frameworks of php, rails, javascript, etc. Most of these follow the Model-View-Controller (MVC) architecture.

It’s not a complete list by any means, as additional frameworks are mentioned in the comments. But it’s a nice readable list to skim, and worthy of bookmarking.

Zephyr sparked my interest - if you aren’t using php5 yet, start today.