Question: Is there a tool that can detect plagiarism in multiple languages for academic papers?

If you're looking for a tool to check for plagiarism in multiple languages for academic papers, Copyleaks is a powerful option. It checks for plagiarism in more than 100 languages and for AI-generated content in more than 30 languages. The service also can be integrated with Learning Management Systems (LMS) and comes with a customizable API. It offers a suite of products to improve writing quality and protect original content, making it a good option for schools and businesses.

Another good option is Crossplag, which uses AI to check for originality of written content in more than 100 languages, including cross-lingual plagiarism checks. It can verify content in a fraction of a second against more than 100 billion texts on the web and offers an API for its Similarity Report. Crossplag is designed to protect privacy and intellectual property rights, and it's customizable and relatively inexpensive for individuals, schools and businesses.

Plag is also a good option, with support for more than 129 languages and a database of billions of articles, including papers from top academic publishers. It offers detailed reports and a range of scores to help you verify the authenticity of your documents. With a free plagiarism check and relatively inexpensive paid options, Plag is popular among students, teachers and professionals who want to ensure their work is authentic.

If you need a tool that can handle different file formats and languages, DupliChecker is a good choice. It offers AI-based plagiarism checks in multiple languages and handles different file formats. The tool not only flags plagiarized content but also offers suggestions for improvement and has tools like grammar checking and content generation.