Mentis came into a fairly complex n-tier shop as a contractor with a strong background. They picked things up quickly and did a great job. My specific relationship with Mentis was to give them requirements for various diagnostic and operational tools, to create from scratch, enhance, or fix, and generally be available for questions about the eccentric bits of our environment and for peer review of their work. They were a pleasure to work with, the team works hard and holds themselves to a high standard, and is always professional. I can recommend Mentis Systems without hesitation.