osTicket is very well suited for small to medium environments where the budget might be tight or a complex system isn't desired. The basic pillars of osTicket being that it is simple, lightweight, reliable, open source, and best of all free really make osTicket a great alternative to higher-cost customer support systems. While osTicket does have shortfalls which would be bad for some environments—like not offering social media integration, lacking a flashy user interface, no detailed analytics (satisfaction, performance, etc.), no live chat/messaging, and any detailed customization requires PHP knowledge—osTicket is a great free and simple support system without the extra features and costs the alternatives offer.
osTicket's hosted version is expensive and customization is kind of hard to come by. So, unless you have programming-proficient developers on hand (we do!) you will need to accept the options that you are paying for.
osTicket's community forum has had some bugs recently as they have rolled out a new platform for it. For people who rely on the community forum extensively, this is a set back. Again, this is more of an issue for those using open source and not the SaaS version.
I am familiar with osTicket and this allow me to teach all the staff and support them whenever they have any concern regarding the usability and following processes.
This company wanted to first explore how a ticketing/support system could benefit their organization before investing [in] a solution. Firstly osTicket is open source and doesn't have a license fee and secondly, because of [its] simplicity, it is quick to implement in the organization. These were the key 2 drivers to choose osTicket. Of course, there are trial versions of the other products available but the implementation time needed is longer since their functionality suite is larger than what osTicket offers. Those extra features aren't needed (yet) so that is the third and final reason why osTicket was chosen and probably will stay until the need for more functionality arises.