You can use Keyword Researcher Pro with the best free keyword research tool out there, Google KW planner. Importing and exporting data is as easy as clicking a button. It’s all done at lightening speed too. There are tutorials of how to do this in video form on the sales page here and they show just how easy this tool is for finding those long tail keywords.
The team at E2M is taking this opportunity to analyze other significant (and free to use/try) keyword research tools out there. We are asking ourselves what data and logic should ideally go into keyword research, how this logic can be programmatically applied to the creation of tools, and what the best ways are to consolidate and use their output. Here’s a quick look at 25 other keyword research tools, some well-known and some you’d do well to know. These are not alternatives to the AdWords Keyword Tool on their own, but each of them performs some function of the AdWords tool in its own unique way, and all of them aid and abet your keyword research quite well.
2) SpyFu: I suggest to have paid account on SpyFu. I just need to find my competitors who using Adwords and review them using this tool. It will show me what ads and keywords they are using. Note that my competitor who paid for that particular keyword knows exactly that it is important for his business including recent trends. Also using SEO feature you can input any URL and find our which keywords they are ranking for.

You can use this tool while searching for ad group ideas or keywords. Keyword planner acts like a workshop that you can use to expand existing network search network campaigns or build new ones. The tool can allow you to search for AdWords tool ideas or keywords, view the performance of a list of keywords, retrieve historic statistics, and develop a new list of keywords by multiplying many keywords lists together. A free keyword planner, AdWords tool can also assist the user in selecting a list of competitive budgets and bids that you can include in your campaigns. You can utilize keyword planner in laying the foundation of a successful online campaign whether you are a highly experienced pro or new to online. All you need is a Google AdWords account and you will be ready to sign in and get on the move.

In a nutshell, Long Tail Pro helps you quickly find keywords in bulk based on a seed keyword that you input.  In addition to returning hundreds of related keywords, the tool also shows search volume (monthly search volume), advertiser bid, number of words, rank value, and my favorite Keyword Competitiveness (helps you judge the competition and keyword difficulty).