Paywall Sentry от 789WIN

Save time and hassle by letting Paywall Sentry show alerts on Firefox search results that contain content which is locked behind paywalls. Configure your personal options with any subscriptions you may have to disable flags on those websites. Soft paywalls (free to use under strict limitations and time periods) are colored yellow and denoted by a [!] icon. Hard paywalls are colored red and denoted by a [X] icon.