Comparisons anchored on LimeSurvey, the GPL survey platform on PHP that is free to self-host as Community Edition or bought as LimeSurvey Cloud.
LimeSurvey's research-grade questionnaires (GPL, PHP) against Formbricks' AGPL in-product and link surveys with an enterprise module: question types and languages, embedding in apps, SSO and roles behind a license key, stacks and which team each fits.
Self-hosted LimeSurvey Community Edition against LimeSurvey Cloud's response-capped plans and hosting regions: data location for EU research, PHP and database upkeep, release support windows and what happens to data when a Cloud plan lapses.
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