Acrobat.com is a suite of free web applications from Adobe Systems that allows users to create, store and share documents and PDF files on-line
If you use it, leave it, if not uninstall.
Adobe AIR - uninstall
Adobe Flash Player 10 ActiveX - you need it
Adobe Flash Player 10 Plugin - you need it
Adobe Flash Player 9 ActiveX - uninstall
Adobe Reader 9 - I recommend, you unistall Adobe Acrobat Reader, which is a resource hog, and install
FoxIt Reader:
http://www.filehippo.com/download_foxit/, which is much smaller, and faster. It does very same thing.
Adobe Shockwave Player - you need it
Adobe Shockwave Player 11 - you need it