Thought Bucket is a Web application that allows user(s) to store their thoughts, ideas, dreams, and hopes into a database. It is not a blogger (although it could be used as one), but instead is a way to manage the random thoughts that we all have from time-to-time. Thoughts are stored according to user-defined categories and can be filtered by category and/or age of the thoughts. Thoughts can also be marked as private, so that the public cannot view them. Thought Bucket also supports fully-customizable themes so that the perfect look and feel is available to the owner of the bucket.
Discloser is (another) PHP/MySQL blog. It has a clean, effective interface. It differs from other weblog/journal/news/content management software in that "post types" are defined by plugins, allowing more intense customization capabilities. It is multi-user by nature, but only one user is required.
Haystack is a powerful tool designed to enable each and every individual manage all of her information in the way that makes the most sense. By removing the arbitrary barriers created by applications that only handle certain information "types", and recording only a fixed set of relationships defined by the developer, users can define whichever arrangements of, connections between, and views of information they find most effective. Such personalization of information management will dramatically improve your ability to find what you need when you need it.
rb.log is a full-featured weblogger written in Ruby. It features file uploads, comments, blog- rolling, side-bar editing, bookmarklets, the Blogger API, searching, RSS syndication, and archives. It also performs well on slower machines by regenerating static pages after posts are made.