A links manager similar to the original WordPress links manger with much updated functionality and features. Has drag and drop ordering, thumbnails, shortcodes, widgets and much more. Fully extendable for developers.
Advanced Sidebar Menu
A sidebar widget for displaying the parent and children pages of the current page. Works with both pages and categories. Many nice widget options. Fully extendable for developers.
Go Live Update Urls
A full database search and replace for changing things like domains when switching from a test domain to a live one. Has built in table by table selection. Works with serialized data like widgets and site options.