If you're looking for a Crossplag alternative, Copyleaks is a good choice. The AI-powered platform not only spots plagiarism and AI-generated content but also offers tools to improve writing quality and to deal with generative AI. It checks for plagiarism in more than 100 languages and can be integrated with Learning Management Systems (LMS). Copyleaks emphasizes data security and transparency, so it's a good choice for universities and companies.
Another good option is Turnitin, which is geared more toward academic integrity and grading. It uses sophisticated AI to spot AI-generated content and flag plagiarism. Turnitin has a range of tools, including Feedback Studio, Gradescope and iThenticate, geared for the education market. It offers deep coverage and support for teachers, helping them handle academic dishonesty issues.
If you want detailed reports and a big database for checking for plagiarism, Plag is a good option. It checks for more than 129 languages and offers a free plagiarism check with scoring estimates, as well as more detailed reports starting at $5. Plag is particularly good for schools, with partnerships that can check submissions against articles published recently.
Last, you can try GPTZero, which is designed to spot text generated by large language models like ChatGPT. It has tools like Deep Scan, Source Scanning and Origin Chrome Extension for browser-based AI detection. GPTZero is good for teachers, writers and recruiters who need to spot AI correctly and scan for plagiarism. Its frequent updates mean the service stays fresh and good at spotting AI.