Online software to check work for plagiarism is available at WriteCheck.com, Grammarly.com and PaperRater.com. WriteCheck.com charges a fee of $8 per document, as of July 2015.
WriteCheck.com offers extensive document checking that looks at exact or similar phrasing in comparison to its repository of other student papers, websites and published works. The company also includes a report that states the overall similarity comparison score and where the writing needs correction. Adversely, Grammarly.com’s plagiarism service is free to users, but it only checks a paper against web documents; furthermore, PaperRater.com, another free online provider compares submitted papers to indexed items that are available in search engines such as Yahoo.com and Bing.com.