KWFinder is SEO (Search Engine Optimization) tool made by a company called Mangools which is based in Bratislava, southern Slovakia. KWFinder is very helpful for a webmaster, blogger, and agency to do keyword analysis. Some other tools that you might want to check out other tools from Mangools are SERPChecker, SERPWatcher, LinkMiner, and siteProfiler where it also provide a great value to gain insight of website rank, backlink analysis, and more.
Although it is not as popular as ahrefs and semrush, KWFinder also gains much traction across bloggers and marketing agencies. It offers a cheaper price compare to those 2 other tools. Ok, to help you get started, here are some reference that you can learn more about this tool :