Clerk - Clerk.io, the artificial intelligence for e-commerce that knows your customers interests.

Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting

Twilio for Slack - Enable SMS conversations with Slack+Twilio

Inline Checkout - Inline is a fully secure All-in-one Checkout, Upsells, Discounts, and Cart Recovery App for eCommerce - Shopify & WooCommerce

Spike.sh - Spike is an incident management platform that alerts via slack, phone and email and automatic escalations to help teams fix infrastructure problems.

Curler - Dead Simple Free Uptime Monitoring