Chyrp is a blogging engine designed to be very lightweight while retaining functionality. It has powerful theme and extension engines, so you can personalize it however you want. The code is well-documented, and it has a very strong structure that's loosely based on the MVC design pattern. Chyrp allows importation from several different blogging engines and uses a system called "feathers", which are basically templates for custom posts.
ShinyCMS is a content management system intended for use by Web designers and Web developers who want to keep a clear distinction between the markup they create and the content their clients can edit. Designers add templates to the CMS, which define page layouts containing editable elements. Users can then build pages by selecting an appropriate template and editing the elements it contains. This approach means that editing content is a simple and safe process, and the site look and feel is kept consistent and professional.