Optimizely - A/B testing you'll actually use.
Novu - The ultimate library for managing multi-channel transactional notifications with a single API.
Dynamic Yield - Personalization & customer experience management
SuperSend.io - Automate Cold Outreach Across Email, Linkedin and Twitter.
AB Tasty - AB Tasty is an all-inclusive platform for conversion rate optimization, personalization, customer activation, and testing.
SuprSend - Single Notification API for Every Channel (SMS, Slack, Whatsapp, Email, SMS, Push, App Inbox)