WP-ServerInfo will display your host’s server PHP and MYSQL information (integrated into WordPress Admin Style) on your WordPress dashboard.
WP_MonsterID provides a small randomly assembled monster avatar for each user based on their email address.
The latest version of ImageManager has been released. This version now supports WordPress 2.1.
ATOM 1.0 Plugin for WordPress:
For those that cannot wait for the newly added ATOM API support in WordPress 2.2 (due out April 23rd), here is a plugin to do just that. [Correction] This plugin replaces all your current WordPress feeds with an Atom 1.0 feed. Converesely, you may also use the templates from SnellSpace. Thanks to Lorelle for the suggestion.
IIS ISAPI WordPress Plugin: This plugin makes WordPress permalinks work properly on IIS servers without the need for any crazy modifications or any full blown mod_rewrite software. Jon wrote it after missing proper permalink support on IIS.