Download websites that use Doppler Forms

About Doppler Forms

The distribution channel for Doppler Forms explains most of what the numbers do. The product is published as a plugin in a public directory, so installing it costs nothing, takes a moment and involves no conversation with a salesperson. Populations assembled that way behave differently from populations assembled by a sales team, and the difference shows up in every column we hold.

The licence is recorded as Freemium, and the free tier is the whole acquisition strategy rather than a concession. A form builder is the top of a funnel for an email marketing service, so a site carrying this plugin has connected its lead capture to a specific mailing platform, whether or not money has yet changed hands. For anyone studying the market, that ambiguity is a feature of the data and needs handling: the list mixes paying customers with trials and abandoned experiments, and separating them takes a second signal, such as whether the forms are still present and still posting somewhere.

Plugin populations fragment for an obvious reason, which is that updating is the site owner's job and most site owners are not watching. A spread of that width across a population of this size means a meaningful share of installations are running code several releases behind the current one, and two audiences care about exactly that. Security researchers want to know which live sites carry an outdated form handling component. Agencies that maintain WordPress estates want the same rows as maintenance prospects.

One caveat about the name. Doppler is a brand used by more than one company in software, including products in entirely unrelated categories, so our count is a fingerprint match on the plugin published at that directory listing and nothing wider. Anyone joining these rows to company records should join on the plugin, not on the brand.

As of October 2026 the plugin is detectable on 6 sites, with the usual plugin bias attached. Sites that strip generator metadata, bundle and minify their assets or sit behind an aggressive cache can run it without showing it, so the count is a visible floor rather than an install base. Even as a floor it answers questions a per domain lookup cannot, because the useful questions are set shaped: how the base divides by country and domain suffix, which sites run it alongside a competing email tool, and which sites dropped it since the previous snapshot. The plugin has been shipping since 2011, and in a category that mature the removals column usually tells you more than the installs column.