Question: I need a solution that checks papers against a vast database of web pages, libraries, and databases to ensure originality.

iThenticate is plagiarism detection software geared for researchers, publishers and academics. It checks your documents against more than 47 billion web pages, 190 million subscription content sources and 81,000 journal articles. The service includes an AI writing detector to flag AI-generated text and an integrated interface to assess matches. Pricing is tiered, so it's good for academic, admissions, government and medical use.

Another top option is Turnitin, an academic integrity and grading service that uses sophisticated AI technology to spot plagiarism and originality. Turnitin's tools include AI writing detection, feedback and grading tools, and powerful plagiarism detection. It's geared for the education market, from higher education to research and publication, offering personalized feedback and grading tools to ensure academic integrity.

If you're looking for a more general-purpose tool that integrates well with learning management systems, check out Unicheck. This plagiarism checker checks papers against 91 billion web pages and its own databases. It offers detailed similarity reports, a private submission repository and data security and privacy compliance. More than 1,100 academic institutions use Unicheck, which helps institutions of all sizes with fast onboarding and dedicated customer support.