Q: Where can I download Extension Manager installer?

Extension Manager installer can be downloaded from http://www.adobe.com/exchange/em_download/.

Patches of Extension Manager can be downloaded from http://www.adobe.com/downloads/updates/, or check out the links below directly:

Extension Manager 5.5.2 update( Mac only )

    http://download.macromedia.com/pub/dw_exchange/extension_manager/mac/AdobeExtensionManager _5_5_2_mul_AdobeUpdate.dmg

Extension Manager 5.5.1 Update

    Windows:http://download.macromedia.com/pub/dw_exchange/extension_manager/win/AdobeExtensionManager _5_5_1_mul_AdobeUpdate.zip

    Mac:    http://download.macromedia.com/pub/dw_exchange/extension_manager/mac/AdobeExtensionManager _5_5_1_mul_AdobeUpdate.dmg

Extension Manager 5.0.2 update( Mac only )

    http://download.macromedia.com/pub/dw_exchange/extension_manager/mac/AdobeExtensionManager _5_0_2_mul_AdobeUpdate.dmg

Extension Manager 5.0.1 Update

    Windows:http://download.macromedia.com/pub/extensionmanager/AdobeExtensionManager-5.0.1-mul-AdobeU pdate.zip

    Mac:    http://download.macromedia.com/pub/extensionmanager/AdobeExtensionManager-5.0.1-mul-AdobeU pdate.dmg