We've launched a new website where you can browse and download extensions for WYSIWYG Web Builder:
http://extensions.wysiwygwebbuilder.com/
These are the same extensions as available in the new Extension Manager of WYSIWYG Web Builder 7.5.
The new website also has a developer login, which allows extension developers to add their own extensions.
Do you also want a developers account, so you can make your extensions available through the Extension Manager and website? Please download this document for more details.
http://extensions.wysiwygwebbuilder.com ... ccount.pdf