Jotform allows users to create web forms (for surveys, etc.) using a drag-and-drop interface.

Zoomerang is online survey software. Users create and share their survey forms. It had the ability to export forms from Survey Monkey. It can be used for free but the paid plans include analysis tools. Zommerang is now part of Survey Monkey.

Wufoo is an online form builder with built-in analytics. Free users are allowed to create up to three forms with up to 10 fields. The forms created can be used for a variety of purposes like registration, research data collection, payment collection, etc. The data gathered can be analyzed inside Wufoo or exported to popular spreadsheet formats

Formspring allows users to create and answer questionnaires either within the web interface or using an iOS app.

Zoho provides a drag-and-drop interface for creating database-driven applications, such as forms.