Wikipedia
MyDLP
MyDLP is free and open source data loss prevention software. It can be installed on both network servers and workstations. Supported data inspection channels include web, mail, im, file transfer to removable storage devices and printers. MyDLP development project has made its source code available under the terms of the GNU General Public License.
MyDLP is one of the first free software projects for data loss prevention.
In May 2014, it was indicated on the MyDLP web site that the Comodo Group had acquired the popular open source data loss prevention system. Comodo has begun marketing the Enterprise version through its Comodo Security Solutions subsidiary. No announcement has been made regarding the status of the Open Source project.