Baremetrics Benchmarks - Benchmark your SaaS metrics with other startups
WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
Open Benchmarks - Live SaaS metric benchmarks from over 600 companies
NEWOLDSTAMP - Email signature generator
ChartMogul API - SaaS metrics and analytics for any billing platform
Sigstr - Email signature marketing