SharePoint 2010 (Foundation) Out-of-Box Web Parts

List of all the SharePoint 2010 Foundation Edition out-of-box web parts:

List and Libraries
   Announcements
   Calendar
   Links
   Pictures
   Shared Documents
   Site Assets
   Site Pages
   Tasks
   Team Discussions

Content Rollup      
   Relevant Documents
   XML Viewer

Forms
   HTML Form Web Part


Media and Content      
   Content Editor
   Image Viewer
   Page Viewer
   Picture Library Slideshow Web Part
   SilverLight Web Part

Social Collaboration
   Site Users
   User Tasks