Upload Plus
https://github.com/softwareloop/uploader-plus
Forum Alfresco : Edit Metadata upon upload
https://forums.alfresco.com/forum/developer-discussions/alfresco-share-development/edit-metadata-upon-upload-08142013-1955
Upload file with custom metadata
https://forums.alfresco.com/forum/developer-discussions/web-content-services/upload-file-custom-metadata-07282009-1107
Uploader-plus installation
http://softwareloop.com/uploader-plus-installation/
Plugin closed.
https://plus.google.com/113188782603492544202
http://alfresco.fme.de/
Plugin Upload open source
http://www.infoaxon.com/add-on/content-uploader-pro/
Customize Upload
http://www.ixxus.com/blog201109customising-upload-files-dialog-alfresco-share/
Best Pratices
http://pt.slideshare.net/alfresco/share-customization-best-practices?next_slideshow=1