This is a great idea but the list seems incomplete. For example, where are the email marketing tools? Mailchimp / Intuit, Convetkit, SendFox, and so many more.

This is a great idea but the list seems incomplete. For example, where are the email marketing tools? Mailchimp / Intuit, Convetkit, SendFox, and so many more. There are many other markets / verticals not covered here.