GMass - GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!
Grade My Ads - Score your Facebook ads + improve them, in seconds.
HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
Madgicx - Ad performance beyond human limits
Quokka (formerly Kryptowire) - The gold standard in SAST, MAST, IAST, and more!
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.