Below are the link for FTP Attachments builds:
You can download the Latest Standalone build from the following link.
http://downloads.ftpattachments.com/builds/standalone.sforce.zip
You can download the Latest FTP Attachments® Importer build from the following link.
http://downloads.ftpattachments.com/builds/FTPAttachmentImporter.zip
You can download the Email2Case from the following link.
http://downloads.ftpattachments.com/builds/Email2Case.zip
Sample code can be downloaded from following link-
http://downloads.ftpattachments.com/builds/FTPAttachments_API_Sample.zip