Ambassador - Referral Automation, Made Simple.
Interactive NPS Calculator (by Delighted) - Calculate your NPS easily with this interactive free tool.
LeadDyno - Lead Dyno - Affiliate Tracking Software
TinyNPS - Simple NPS feedback
Yotpo - Yotpo is the smartest way to generate customer content, drive traffic and increase conversions.
NPS for B2B SaaS - NPS surveys and analytics for B2B teams