Paypal
ActiveCampaign
CampaignMonitor
Constant Contact
HubSpot CRM
Mailchimp
Mailgun
SendGrid
Dropbox
Freshbooks
Stripe
Square
Trello
Twilio
Zapier
Zoho CRM
Authorize.Net
From unlimited forms and entries to conditional logic, the Gravity Forms form builder supports numerous features that put all aspects of data collection in the hands of the end-user. All forms have a responsive design, too, adapting to various screen sizes.