Free grammar fixes can be accessed online via LanguageTool or PaperRater. The former assists in proofreading the most common mistakes for correction, while the latter proofreads and helps in fixing them.
LanguageTool can be used for determining not only English grammatical errors, but also those of German, Polish and other languages. To use this tool, a person should copy and paste the text into the provided box and click the Check Text icon. The tool can also be downloaded for use as part of Firefox Browser, OpenOffice or into a person's computer.
PaperRater provides two languages options, American English and British English, for grammar and spelling check. There are also options like paper type and originality detection. A person should copy and paste the text into the given box and click the Get Report icon. If there is a spelling or grammar mistake, the checker gives various suggestions for fixing the error.