I've been using AccuRanker for a few years now after switching from another software.
It's extremely fast and accurate, I simply love AccuRanker for delivering on their promise.
They also constantly develop it and their location based rank tracking is unparalleled.
Hans van Leersum
Excellent tool for linkbuilders.
With CognitiveSEO you get insights in linksprofiles of you own website, your clients and their competitors. I'm using CognitiveSEO for several years now and I realy like that they combine linkdata from multiple sources. You can also clasify and filter links as being natural/unnatural and even generate a disavow file to submit to Google.