The Keyword Factory Tools (KFT) is a terrific set of tools for quickly discovering the key word phrases you need to rank pages on your site. KWT does the deep research for LSI key words you need done. Most of the tools in KWT are available elsewhere, that's not the biggest feature.
The big deal here is that all of these tools are in open easy to use app. No longer do I have open Ad Words, copy in my seed words and the copy the resulting key word phrases from Google to a text file, and then open another app to sort, dedupe, and scrub them. And then fire up another app to search for article titles, and a fourth app to wrap the phrases with buyer intent words and then set them up for spintax.
No, I can do all of that in this one app. And then I can spell check my list and use it to create HTML links with anchor text for me. Oh and did I mention you can translate your key words into any one of the 3+ dozen supported languages? Well, you can to that too.
It's an amazing all-in-one app that saves me time and effort. If you do deep keyword research, this is your Keyword Swiss Army Knife.