SmartDVB - This is a fully functional DVB application which supports DVB-S/T/C and ATSC devices.

Zeetaminds - Zeetaminds offers cloud based digital signage software with live social media integration. 

Tvheadend - Redmine

ScreenCloud - ScreenCloud is a simple, cloud-based Digital Signage software solution that makes it easy to display video, images and content on screens.

DVB Dream - DVB Dream is DVB player with many nice and unique features (more below), it supports standards...

Embed Signage - Multi-platform Digital Signage Software that's quick to learn and powerful to use. Packed with features, simple to use and wide range of device platform support. A better way to manage your Digital Signage.