Best in class grammar checker tool. This tool is well in competition with Grammarly Grammar Checker. The best part of this tool is that it is free. You can upload your documents saved on Google docs or Microsoft Word here and check the grammatical mistakes. ANlso, you can paste the text that you want to check. You can find this as a Grammarly free version. The best use of this tool is for content writers. You can use the article rewriter for rewriting or spinning the article and then passing it through our Grammar Checker Tools to correct the contextual meaning and any other mistakes made by the article rewriter.