https://saaszilla.co/deals from what I understand vet software which makes it more attractive. In addition I'm in https://www.facebook.com/groups/softwarelifetimedealsappsumosaasltdkenmoo which has over 15k members and they discuss software. saaszilla.co has been mentioned a number of times.

The big difference is that saaszilla.co only seems to have a select few products. If you can combine it with the facebook group Kenmoo, I think you'd be in for a winner.