If you need a good one Help Desk Software, I can reccomend you HESK. What is it? It is a help desk software that help you to maintain all things customer in one way via ticket system. So it will be more recognize more efficient and also easy to maintain.
3 ways how HESK will help you:
> Receive, track and organize customer support issues (tickets) by department and by urgency.
> Integrated Knowledgebase may reduce the number of support requests by as much as 50%!
> HESK is super simple to use, fast, lightweight, secure, user friendly and FREE!
Actually, I have used it since 2012 until now. And HESK really amazing yet free. Download HESK now >.>