Sites and apps similar to D21 include Google Forms, which is free. Other options are LimeSurvey, Yakforms, Microsoft Forms and DemocraciaOS. You can choose from more than 10 Survey Creators like D21 for Windows, self-hosting, Android, iPhone and Linux.
Collect information using custom online surveys, quizzes, polls, or RSVPs, share forms easily, analyze organized responses in linked spreadsheets, automate grading, support file uploads, customize questions, visualize data, and collaborate in real-time.
United States
LimeSurvey (formerly PHPSurveyor) is an Open Source PHP web application to develop, publish and collect responses to online & offline surveys. Anonymous and Not-Anonymous survey, open and closed group of participant surveys, optional public registration for surveys.
Germany
EU
Yakforms is a free-as-in-free-speech software that allows you to easily create forms for your community. Whether you need a full-blown or a quick poll, Yakforms will fit your needs.
FranceEU
Simplistic surveys by Microsoft. You can easily create surveys,quizzes and polls to collect customer feedback. Free with your Office 365 credentials or Microsoft account (Hotmail, Live, or Outlook.com).
United States
We are Democracia en Red, a civil society organization based in Argentina composed by activists, developers and social scientists with the objective of opening public institutions and giving access to decision-making spaces.
Argentina
The mobile way to collect data on field. Convert all of your paper forms and processes into DataScope Platform to revolutionize the way you work.
ItalyEU
No Code platform enabling any employee to efficiently design mobile and web apps with Excel knowledge, manage operations, automate workflows, and create ERPs or simple tools. User-friendly interface and cloud-powered, Clappia facilitates effortless app scalability and deployment.
India
Create, distribute, and analyze online surveys with real-time graphical insights, reach target audiences directly, secure data on UK/EU servers, customizable questions, survey templates, advanced branding, integrations, detailed reporting, and user-friendly support.
United Kingdom
GermanyEU
Empower your organization with automation using the online form builder. Handful features for you to create forms such as Contact forms, registration forms, survey, booking, sign up forms, etc. Create forms using drag and drop components and start collecting data right away!
Replace Google Forms by creating a personalized HTML Form and save the responses on Google Sheets.
Gather feedback with online surveys and forms. Connect with the included API, webhooks, and 3rd party integrations. White-label Friendly.
United States
