CareerExplorer is a free and comprehensive career test. While testing, it may ask you to rate from 1-5 a particular career. When you hover over that career, a small box with a succinct description of that particular job or profession pops up. These short descriptions are very helpful if someone isn’t completely clear about the differences between say a mechanical engineer and a civil engineer, and I suspect they contribute to an overall more accurate result.
After completing the CareerExplorer test, you can click on the Careers tab and find incredibly detailed profiles of all the suggested careers (including the reasons for your compatibility with that specific career, followed by an overview of the career, salary, job market prospects, what sort of education and training is needed, work environment and so forth). In addition, you can access these detailed profiles for over 800 careers either before or after you test – the only difference being that your specific compatibility won’t be part of the narrative.
You can access the free test (and explore over 800 careers with incredibly detailed profiles) here.