There are several free plagiarism detection tools available for paper analysis. Here are some popular options:
Grammarly: Grammarly offers a free version that includes a plagiarism checker. It scans your document for potential plagiarism and provides a detailed report highlighting any matches found.DupliChecker: DupliChecker is a free online plagiarism checker that allows you to upload your document or paste the text to check for plagiarism. It provides a percentage of plagiarized content and highlights the matching sources.SmallSEOTools: SmallSEOTools offers a free plagiarism checker that compares your text against various online sources. It provides a detailed report with highlighted plagiarized sections and the sources where they were found.Quetext: Quetext offers a free version of its plagiarism checker that scans your document for potential matches on the web. It provides a percentage of originality and highlights any passages that may be plagiarized.Copyscape: Copyscape is a widely used plagiarism checker that offers a free version. It allows you to check your document for duplicate content by entering the URL or pasting the text.It's worth noting that while these tools are helpful in detecting potential plagiarism, they may have limitations in terms of the depth of the search and the accuracy of the results. For comprehensive plagiarism checks and advanced features, some paid options are available as well.
Remember to use plagiarism detection tools responsibly and always properly cite and reference any sources used in your work to avoid plagiarism.