I'm building and selling software that automates savings on AWS costs, for a small cut of the savings (less than 5%).
Here are the tools I published so far:
https://aws.amazon.com/marketplace/pp/prodview-6uj4pruhgmun6
https://aws.amazon.com/marketplace/pp/prodview-ryzl67mmq3ghk
Let me know what you think and if you have any feedback/questions.