For all the changes that Google constantly applies to its algorithms, keywords continue to be the most solid pillars of product, service and brand discovery on the internet; to this effect, keyword research also continues to at the heart of search engine optimization, and this is expected to continue for at least a decade. From content optimization to email marketing and from AdWords campaigns to long-tail ranking, keyword research is crucial for SEO professionals focused on delivering results to their clients, and this in turn requires using the right tools of trade. SEO practitioners have quite a few keyword research tools to choose from; some are free, others are free to try, and some of the most reputable are offered on a paid subscription basis. Providers of SEO tools know that they operate within a very lucrative and highly competitive field, and this is why many tools offer strategy and advanced features on top of keyword research. When it comes to doing research for clients who wish to establish an adequate online presence, Google Keyword Planner is free and highly recommended. At some point, there will be a need to conduct competitive research, and this is when premium research tools may come into play; however, an alternative strategy would be to perform exact keyword queries and take a very close look at the listings appearing at the very top of the search engine results page. The key is in knowing what to look for, which should include page layouts, schema markup terms, meta titles, image tags, and other on-page SEO craft; this is a significant portion of what premium keyword research tools offer, but they present this information in organized display along with recommendations. Aside from Google Keyword Planner, Keyword Everywhere is another research tool that can be used for free. SEO professionals and online marketing agencies that manage lots of clients and work on deadlines are probably better off with premium tools such as SEMRush and Ahrefs because they may not have as much time to conduct the aforementioned evaluation of websites ranking high on the SERP; in the end, however, the basics of keyword research are always free. For more information click here https://www.reddit.com/r/SEO/comments/adtl8x/freekeywordchecker_tools/.