Club Ladders

Hi guys. I’m completely new at this. Need a sports ladder app to get people from different clubs to play squash together. Actually, any club-ladder app would fit the bill. I wanted to write one myself, but everybody tells me I’m nuts, must be hundreds of them out there, already written and in the public domain. Drats, I wanted to write my own. Have to check first though. Is it true that you can get them off the shelf?