This jQuery Accordion Web Part for SharePoint 2010 creates an Accordion widget in any webpart zone. Also can be placed several Accordions side by side on same page and publish HTML- Rich content data from different SharePoint lists.
This web part helps you to save screen space, focus the attention of the user to specific information, and have more content available instantly with only one click. It groups list items by a group field you select and shows the list items of only one group at a time. Thus lists can be presented in fully customized and user friendly way.
As with many SharePoint solutions, Accordion jQuery webpart provides a basic result that can be built on and extended further, as time allows.
Source Code included in the price. Also available customization, branding, support and free updates.