RS Forms : RS Forms is the most versatile Joomla Forms Extension. It has a component, supporting modules, plugins and 3rd party integration add ons as well. It supports AJAX Submit and Drag Drop Form fields management as well. You can edit the forms layout, select from pre-loaded form layouts, save form submissions, import export forms, import export form submissions, make database related form applications, credit card forms and paypal payment forms , etc.
Chrono Forms : ChronoForms has been there since the very starting days of Joomla project. It flexible, intuitive, works out of the box and is bug free. It supports drag drop form fields management, import export forms, import export form data, database based form applications, etc . It now supports Credit card payment forms, Authorize.net payment gateway integration and PayPal integration too.
Breezing Forms : Breezing Forms comes in two versions. One is the free which is limited and another one is the commercial one, which is loaded with features. It supports HTML5 upload progress, frontend display/edit, Google Drive Spreadsheets, true mobile support, Salesforce, Dropbox, Mailchimp, multipages, payments, conditional fields, themes, etc. It also comes with three form editor modes- Quick , Easy, Classic Mode. Its really easy to use and works out of the box!
Pro Forms : ProForms is a state of the art form creator with built in app system. Its 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. This extension is also available in a FREE basic version
JSN Uni Forms : Easy-to-use but still sophisticated and functional, JSN UniForm will help you to generate and manage various forms in your site without a single line of code. “Contact us”, “Survey” and “Job application” are just some of hundreds of forms that this single extension can help you to create and control.