Interactive NPS Calculator (by Delighted) - Calculate your NPS easily with this interactive free tool.
Open Benchmarks - Live SaaS metric benchmarks from over 600 companies
TinyNPS - Simple NPS feedback
SaaS Metrics Refresher from ChartMogul - A 10-week crash course in SaaS metrics 📊
NPS for B2B SaaS - NPS surveys and analytics for B2B teams
ChartMogul API - SaaS metrics and analytics for any billing platform