There are 3 repositories under cloud-cost topic.
Amazon EC2 instance comparison site
The Cloud Cost Handbook is a free, open-source, community-supported set of guides meant to help explain often-times complex pricing of public cloud infrastructure and service providers in plain english.
A curated list of awesome cloud cost control blogs, podcasts, standards, projects, and examples.
Azure DevOps integration for Infracost. Shows cloud cost estimates for Terraform in pull requests for Azure DevOps repos and GitHub repos.
A curated list of awesome tips, tricks and hacks for saving cost on the cloud
FinOps : Cost Optimization techniques in AWS Cloud. Cloud Cost Optimization
Guide to Kubernetes autoscaling for cloud cost optimization. Autoscaling in Kubernetes demystified. Client Demos on HPA &CA
Cost Optimization techniques in Microsoft Azure. Cloud Cost Optimization