Best form Builder hands down!!
I've started working with Cloud Pages in Salesforce Marketing cloud and quickly noticed it's limitations and things you wanted to do had to have workarounds by building process. I then started searching third party applications for this. I wanted to created a form that captures my contact info and drop it into Salesforce CRM, append it to a campaign and generate an opportunity with specific sales stages and lead source. None out there could do this in a simple way and if they could they had limitations. (ex: ability to set custom subject and email response after submitting form or set complex conditions, etc). After checking out 11 applications I found this. They were very helpful and gave me tips on utilizing one form for all my product by using set conditions instead of having to create over 100 forms a year for each product. Again BEST FORM BUILDER EVER!! Highly recommend it! Now if only SF could learn from Formtitan when updating their Cloud page feature in SF Marketing Cloud.