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

Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates

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

Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.

Curler - Dead Simple Free Uptime Monitoring

Nylas Mail - The Nylas Cloud API powers your application with email, calendar & contacts features. Built-in features for better email, calendar, and contact management.