The following three are the best among the paper plagiarism checking software rankings.

1. CNKI’s paper plagiarism checking software database is relatively powerful and can detect papers by category. It has a plagiarism checking entrance for undergraduate papers, a plagiarism checking entrance for master’s and doctoral theses, a plagiarism checking entrance for professional title papers, and a first draft paper checking entrance. Re-entry etc.

It is currently the most commonly used software in colleges and universities. It has a unique joint comparison database of college students for undergraduate thesis testing. The test results are basically the same as those of the school.

2. Wanfang and VIP are paper plagiarism checking software that have emerged in recent years, and their databases are not as complete as CNKI. There are not as many versions as CNKI. If the school requires the use of these two plagiarism checks, everyone can choose. If there is no requirement to choose these two systems, everyone should not take any chances.

3. Paperfree paper plagiarism checking software is a relatively long-lasting paper plagiarism checking software, second only to CNKI paper plagiarism checking software. It has been recognized by many schools and graduates in the market, and is also required by many schools. The paper plagiarism checking system used is fast, the plagiarism checking results are accurate, and the cost is very low.