Alternativ till Updown Test för Chrome med gratis licens

• Chrome
  Alla plattformar Windows Mac Linux Android iPhone Windows Phone Blackberry Apple Watch iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Software as a Service (SaaS) Windows Mobile Java Mobile S60 Apple TV Chrome HP webOS
• Gratis licens
  Eventuell licens Gratis licens Open Source-licens Kommersiell licens