Jetpack - Jetpack offers SEO and security plugins for Wordpress.
Snoopforms - The Open-Source Typeform Alternative
WP User Manager - The most customizable profiles, community builder and membership WordPress plugin
Conversational Form - Turning web forms into conversations. By SPACE10
Project Panorama - Project Panorama is an elegant and reliable WordPress manager plugin that comes with exciting features and tools that will allow managing your multiple WordPress sites with ease.
MyDataPro - Web Forms, but made easy