I wasn't expecting too much when I started using Simon; I had used various open source monitoring packages and figured Simon was just going to be a nice GUI to do basically the same thing. I WAS WRONG. Simon is full of nice touches and is a very polished package. The flexibility in setting up a variety of tests and customising the different notifications is simply amazing. And it is so easy to configure. The developer is also very helpful and responsive. This is by far the best software I have purchased this year (& maybe will be all year).

But more to the point, it has already saved me money by giving me a notification about a misbehaving server before the problem became a serious issue.