6. Language Tool

The Language Tool will help you proofread any piece of content in over 20 different languages. It performs better than any other spell checking tool out there as it easily detects any number of wrongly-spelled words across the content faster than similar tools can do. So, it’s a powerful grammar checking tool to make your content suitable for better user experience and Google rankings.

Language Tool is such an open-source grammar checking tool that comes up with a considerable number of color-coded lines of potential mistakes and errors across the content. All you need is, paste the text into the content toolbox, and choose a language to instantly get an in-depth analysis of the detected errors – which can be corrected right away.

This tool will ensure you can always come up with error-free content in more than 20 different languages and it’s completely free.

7. Keyword Density Checker

Producing quality content is a must, but it’s equally important to consider running your content through a keyword density checker to make the content highly accessible to your potential readers. And that’s what the tool will do for you.

This tool will help ensure that your content isn’t overloaded with keywords and likely tagged as spam. Note that you mustn’t go beyond one percent keyword density in any of your content.

Run your content through the Keyword Density Checker before hitting the publish button to ensure you aren’t caught overdoing keyword stuffing, which is subject to the Google penalty.