Poll the People - Poll the People is a leader in pre-live A/B testing.
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!
CubeGO - Scale your qualitative user testing, quickly and easily.
Elevatr Email Marketing Automation - Fast and easy email marketing software
Userbrain - Easy, fast, and affordable user testing for websites and prototypes.
Google Sheets Email Marketing - Email automation and validations directly from Google Sheets