What is the best keyword research tool?

When it comes to finding successful keywords for your website's content, a good keyword research tool is invaluable. This is especially true for SEO campaigns and for anyone who is looking to increase website visibility on search engines. There are countless keyword research tools available on the market, so how can you decide which one is best? We've compiled a list of the top 5 keyword research tools to help you make an informed decision—read on to find out what they are!

1. Google Keyword Planner: An official offering from Google, this free tool is one of the most popular on the market. Not only does it suggest keywords related to your target search terms, but it also provides data such as searches per month, competition level, and average CPC. A great starting point for those new to keyword research.

2. SEOBook Keyword Tool: SEOBook's free keyword tool provides data including cost-per-click, estimated click-through rates (CTR), search volumes, global and local search trends, and more. It also gives you recommendations for longtail versions of your queries as well as related terms which could be used in content creation or PPC campaigns.

3. Wordstream Keyword Tool: Wordstream boasts 'the most advanced keyword research tool available today' – and it delivers! On top of providing suggestions for relevant phrases and longtail versions of queries, it also offers the following features: difficulty ratings for various keywords; monthly search volume trends; domain-level competitive analysis; and daily budget projections for PPC campaigns.

4. Moz Keyword Explorer: This free software provides comprehensive data about each word or phrase you enter as well as suggesting related terms that may be suitable replacements or complements in a piece of content. It even offers valuable insight into seasonal variations in searches over time!

5. Ubersuggest: Powered by AI algorithm technology, Ubersuggest provides detailed recommendations related to your target words as well as predicted difficulty levels established through competitor analyses based on backlinks – perfect if you're looking get ahead from the competition!