It is easy to miss simple mistakes made in a paper such as misuse of a homophone, repetition of a word and other simple mistakes. Using a free online proofreader can prevent these errors from making it to publication. Online proof readers rage in complexity. Some handle only grammar errors while others grade a paper based on variety of language and sentence structure and originality.The Ginger
. proofreader is a relatively advanced free online proofreader available at http://www.gingersoftware.com/proofreading/. Copy and paste the text of your article in the top box and hit the "Ginger it" button and a revised version of your text appears in the bottom box. Results are immediate and useful. The limitation of this system is that it does not tell the writer why an error needs corrected, so there is no learning element here.Grammarly is an online proofreading service used by more than 300,000 students worldwide. It claims that it is the world's most accurate grammar checker. It allows you select a category for the work you are having checked, including: business, technical, academic, creative or casual. The results take several minutes to load, so the grammar report does not occur as quickly as some other proofreaders, but in the end it generates a very specific list of errors including plagiarism detection report, contextual spelling report, grammar correctness report and punctuation issues report. It also scores the paper on writing style and vocabulary and offers suggestions for improvement. The Grammerly proofreader is available at http://ed.grammarly.com/editor/view/?f=1.Paper Rater requires users to provide their education level and the type of document they are submitting when electronically proofreading a document. The site offers an optional plagiarism detector as well. The report generated includes a grammar report, a proofreading report that includes spelling, a vocabulary section, an analysis of transitional phrasing, an overall rating or grade and a plagiarism detection report. The Paper Rater online proofreading system is available at http://www.paperrater.com/free_paper_grader.More reference links: http://www.paperrater.com/free_paper_grader http://ed.grammarly.com/editor/view/?f=1