UserTesting.com - Usability testing has never been easier. Get videos of real people speaking their thoughts as they use websites, mobile apps, prototypes and more!
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
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Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES
UserZoom - Test, measure, and monitor UX with our cost-effective all-in-one platform. UserZoom is a cloud-based solution for online usability testing.
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