Zammad is described as 'Web based open source helpdesk/customer support system with many features to manage customer communication via several channels like telephone, Facebook, Twitter, chat and e-mails' and is a Help Desk platform in the business & commerce category. There are more than 25 alternatives to Zammad for a variety of platforms, including Web-based, Self-Hosted, SaaS, Android and iPhone apps. The best Zammad alternative is Deskhero. It's not free, so if you're looking for a free alternative, you could try FreeScout or Freshdesk. Other great apps like Zammad are Zendesk, osTicket, LiveAgent and Help Scout.