Your form submitted data can be sent to your Google Drive using this plugin. The RSForm!Pro Google Drive plugin allows you to connect to your Google Drive and upload submitted files within the desired destination folder.
RSJoomla
Smooth newbie introduction, professional feature set, flexible validation, nested conditional fields, customizable email, user data management, user inputs in frontend, native spam protection, Gratis.visForms comprises both, all basic standard features including responsive design that any contemporary form generator should offer, and a rich professional feature set free of charge.
QuickForm 2 is a simple and functional solution that allows you to create dynamic forms on Joomla!. With its help, you can quickly create complex forms that are not accessible by functionality to any other builder.
With RSForm!Pro - Zapier Plugin, you can add Zapier Webhooks to your form. The integration is done silently while running in the background, so the user (form submitter) will not notice anything in the frontend.
The RSForm!Pro Mailer Plugin allows RSForm!Pro to send emails using a different mailer settings than the ones from Global Configuration. Besides this functionality, the RSForm!Pro Mailer Plugin will help you to prevent spoofing by adding a digital signature to outgoing message headers using the DKIM standard.
JoomForms let you build and design your own forms using an advanced forms builder, you can create unlimited contact forms, multipage forms, application forms, event registration, feedback, surveys and more inside your Joomla website easily.
Create bilingual or multilingual forms with help from Polylang. Polylang is a free WordPress translation plugin that many rave about.
Proforms Advance1.6.2 Build 160 
Joomla forms made easy! Easily create Application forms, Contact forms, Payment forms, Double-Opt-In forms etc.
State of the art forms creator with built in app system.
Pro-Forms is a very easy to use Joomla component for creating forms with extensive professional functions.
Proforms is thus ideally suited for beginners and also meets the needs of designers and experts.
Your creative Joomla forms maker, build a responsive contact form in seconds with bootstrap CSS, with this easy to use Joomla forms builder every kind of form is possible, contact forms, payment forms, autoresponders, article form, survey, captcha, multi page and more!
CW Forms1.5 
Making forms in articles just couldn't be easier!
Fast and Simple and user friendly forms for Joomla Articles. Drag and drop form interface right in the Article Edit form page. Very easy to use and effective way to manage forms for Joomla Articles. You will love it!
The RSForm!Pro Signature Plugin is a plugin that once installed and enabled will allow you to add a digital signature field to your form.
joomla Payment Form6.8.2 
Payment Form (PMF) is a Joomla 3.x extension developed by Ossolution Team to allow you create forms to collect information and get payment from your site members / visitors (for a service, for an event registration ...) via online payment gateway such as: Paypal, Authorize.net, Eway.... Main features:
Cform is the best joomla Extension for Create responsive forms faster than ever before! CForms is the ultimate WYSIWYG drag & drop form builder for Joomla. You can easily create beautiful and responsive forms with different fields, captchas, validations, payments and a lot more.
2019-02-28ChronoForms Pro7.0.7 
Your creative Joomla forms maker, build a responsive contact form in seconds with bootstrap CSS, with this easy to use Joomla forms builder every kind of form is possible, contact forms, payment forms, autoresponders, article form, survey, captcha, multi page and more!