KeywordSpy is appropriate for most Internet Market research companies. I would not suggest it for a corporate marketing department unless it's a company with a very larger budget. This is also not a tool for small freelancers even though there is a free option, to get the best benefit of KeywordSpy it's best to use most of its features and options and this can get pricey.
SEOquake is a great tool to use alongside Semrush with the quick data that it provides on the search results page it's helpful to make quick decisions. The ability to change the SERP locale is also really nice as it helps us analyze the search results page from different locations.
Gives a ton of SEO info in one area. I usually have to use a few different Chrome extensions that show different areas to get the full picture that this tool gives you up front.
It gives you info on ways to improve the infrastructure of your website.
The high-level parameters are nice to see, but for a new-to-the-tool person, they are confusing and don't provide a lot of explanation, unfortunately.
The keyword density section is somewhat helpful but gives the density in a percentage without rationale as to what an average percentage is or what the website should aim for.
Most SEO and market research tools offer what KeywordSpy has but are not as detailed and in one place. Consequently, where you can do everything at KeywordSpy, with other tools you find you have to purchase multiple tools or subscriptions from different providers which also don't integrate with each other. KeywordSpy makes your research easier and more efficient.
SEOquake provides more information regarding backlinks and traffic in general whereas other tools focus more on keywords and their search volume. The backlinks information it provides is also really useful in making quick decisions on which site we can focus on more when it comes to searching for backlink opportunities.
