Contact Form 7 - Contact Form 7 is a tool to manage multiple contact forms.
Callpage - Turn website visitors into sales calls. Use CallPage and provide immediate free phone callback to your leads in 28 seconds.
Google Forms - Simple web forms from Google.
Novocall - Novocall converts web visitors into sales calls in seconds.
Jotform - Free Online Form Builder & Form Creator
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.