wp-freemius

Use when integrating Freemius SDK into a WordPress plugin for monetisation — SDK bootstrap with fs_dynamic_init, feature gating with can_use_premium_code() / ispremium_only() / is_plan() / is_trial() / is_paying(), license management, free/pro dual-zip build using premium_only file suffix, generating upgrade URLs with get_upgrade_url(), opt-in analytics dialog, multisite licensing, affiliate program, or debugging…