Xibo - Digital Signage for Everyone!
Keep The Score - An online scoreboard and leaderboard app that allows you to track points for anything
Yodeck - Yodeck enables you to design and schedule your digital signage on Raspberry Pi easily from the web, using your computer, tablet or smartphone.
Track Score Online - An online tool for creating scoreboards and leaderboards. Fast, free and ideal for school, games and sport!
LibreSignage - An open source digital signage solution
Open IAS Scoreboard - Use any display as a scoreboard for sports.