WP Image Importer plugin allows you to easily insert image into your wordpress post
Autodownload enables you to link to files in a directory in your posts and pages without interacting with WordPress.
This plugin provides to append one category to all blogs for wordpress mu administrator.
Provides a foundation and extensions for/to common WordPress developer functions/tasks - creating/installing plugins, complex database queries, etc
A plugin with common features missed in WordPress, like favicon, meta tags, adding HTML to head and footer, WordPress e-mail from header filter, etc.
Reusable utilities and inputs to aid in WordPress theme and plugin creation