SecureShares is a secure file sharing service developed by PCConsultants Ltd & Co KG for individuals as well as small and mid-sized companies who need to share files securely. We recently decided to release it as an opensource project under the Apache license.
SecureShares is a Tomcat-based (version 6 or higher) web app in which you can easily upload files to a secure area and as easily make files available to friends, associates or customers as a one-time download or set an expiration time (e.g. one hour, one day or one week). The end user will receive an mail with a secure link to the encrypted file.
Downloads are as easy as a click of the mouse. Works with all browsers.
If you wish your customer to upload an edited file, they need only login to the web interface and drag & drop their file into the upload box. You will be alerted by email when a new file arrives.