osTicket is described as 'Lightweight, open-source support solution with built-in customer portal and rich admin dashboard for easy ticket management' and is a popular Help Desk platform in the business & commerce category. There are more than 100 alternatives to osTicket for a variety of platforms, including Web-based, Windows, SaaS, Self-Hosted and Android apps. The best osTicket 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 osTicket are Zendesk, Zammad, HESK and Help Scout.