Had deployed SW on-premise in my previous employment, I do not know how it will fare out after reading the news earlier. It has been rock solid even when others had an issue logging in when a problem struck...it seemed that my installation was not affected then.
I've tried and really liked osTicket but I am now testing GLPI. I was looking into a ticketing system with inventory and the features which tied the ticket to a person and/or hardware and keep its history (like SW). GLPI with FusionInventory seemed to be just that.
Let me know if you need any help, I've been dealing with the inventory side of that combo for going on 3 years now. Going to be getting more into the data-center / server room management side of it with the management and financials stuff next week.
Yup, the network scanning inventory (fusion inventory) is where I stopped at. I have installed agent on 2 computers successfully but as it seems, it was not updating. It was not due to how it was programmed, rather, it is due to my limited understanding on how to configure it.
This should be set and forget so long as you're installing as a service (or daemon if *nix) and your configuration file / registry entries are good.
Another wall I hit is that all emails (new tickets and responses) have different time-stamp (15 hours late).
Sounds like a possible issue with the php timezone config on your server