Formivo

Formivo is a form backend for websites that already exist. Create a form in its dashboard to get a public endpoint, then point the form's action at that URL. HTML, React, Next.js, Vue and PHP forms can all post to it, with form-encoded or JSON submissions. Each request is validated, rate limited and stored in your workspace.

Submissions can be searched and filtered by form, status or free text, then reviewed and tagged. Each lead keeps its full payload, source URL and timestamp. You can invite a client to a read-only view of a single form to see their own leads.

It suits freelancers, agencies and developers who ship websites without wanting to run a server for form handling. The free plan covers three forms and 300 submissions a month. Formivo is endpoint-first and does not include a form builder.