Search engine keyword rank - easiest way to check the keywords that rank across website

[McTaggart]

What is the best keyword ranking tool you have used? I have used various tools by which I am expected to identify and input the keyword I want to track...

However, recently I was introduced to Searchmetrics, which I think automatically pulls in the keywords a website ranks for, without the need for manual input from the SEO (I haven't used this tool yet, so apologies if I am incorrect!). Do any other rank trackers work like this?

Thanks, Luke

[GastonRiera]

Hi Luke,

I've never used Searchmetrics. Instead I've used (and currently using) Ahrefs and SEMRush, both bring all the position crawled for a specific domain. 
Of course, they have limitations. Depending on the subscription, the country's search engine, and so on.

In my opinion, the best tool is WMT (as you might know). Im assuming that you want information about competitors or potential clients wich you dont have WMT permits.

Best Luck.
GR.

[McTaggart]

Thanks for your helpful feedback Gaston - much appreciated.