Website Down-Tester: https://downforeveryoneorjustme.com VPN Anbieter: Mullvad.net / Nordvpn.com / Cyberghostvpn.com / protonvpn.com Signal-Tester: https://www.yougetsignal.com Email-Test: https://centralops.net/co/ Schrift-Erkennung: https://www.whatfontis.com