Is there any Grammarly alternative open-source?

Some of the best plagiarism checker software are as follows:

• Plagiarism Checker X
• Grammarly
• Urkund
• CopyLeaks

The limit for checking plagiarism depends on the type of work that is submitted and can vary by institution:

• Original papers: Zero plagiarism is preferred from authors, but some journals allow up to 15% similarity.
• Book chapters: Up to 5% similarity is common.
• Theses: A usually accepted similarity score is less than 10%.
• Assignments: Usually, schools permit a similarity score of less than 15%, but some completely forbid plagiarism.
• Turnitin similarity reports: The similarity score that is acceptable varies by department or institution, although 30% is often seen as high.

There is no free tool to detect plagiarism in 10,000 words. However, you can get paid software to check plagiarism in the content for more than 10,000 words.

There is no software available that checks 15,000 words for free. But there are many paid software like: Grammarly, Copyleaks, and Editpad that can detect 15,000 words.

A plagiarism tool refers to an online service designed to identify plagiarism in documents or any content. These tools use advanced algorithms to detect the plagiarized content from the submitted content available on webpages.