Photopress adds a popup Upload and Browse tool to the WordPress Quicktags toolbar to you can upload images and insert links to them in posts.

flickpress adds a multi-user popup Flickr tool to the WordPress toolbar. It lets you browse recent Flickr photos, tags, and photosets for multiple users – then insert various sizes of photos into your posts.

Filez is a simplified version of Photopress, without the image-related features. This leaves a file uploader/browser that inserts links to files in posts. I wrote it for myself for uploading plugin archives and linking to them. It also makes file replacement easy.

Dasher is a Dashboard replacement for WordPress.

Contactz is a simple address book plugin for WordPress.

Birthdaze is a simple birthday plugin, really just a simplified version of Contactz.