Xuexin.com Wanfang Duplicate Checking: A duplicate checking website jointly launched by Xuexin.com and Wanfang provides duplicate checking service for papers free of charge. The website adopts a self-developed detection system, which has played a positive role in preventing academic misconduct.

HowNet duplicate checking: The duplicate checking software developed by China HowNet provides duplicate checking services in multiple versions, including standard version and flagship version. The software adopts advanced algorithms and technical means, which can accurately identify plagiarized content and give corresponding prompt information.

VIP Journals Online: VIP Journals provide free paper duplicate checking service online, and users can upload papers for testing through this platform. The duplicate checking results of this platform are basically consistent with the traditional similarity detection results of academic journals.

Google academic search: Google academic search provides free academic literature retrieval service, and also provides duplicate checking function. The duplicate checking result of this platform may be influenced by the database, but it still has certain reference value.

Academic search engines: Some academic search engines also provide free paper duplicate checking services. For example, Baidu Academic Search and sogou Academic Search both provide duplicate checking function. There may be some differences in the duplicate checking results of these platforms, but they can still be used as one of the references.

Please note that different duplicate checking software may use different algorithms and databases, so the duplicate checking results may be different. When choosing paper duplicate checking software, it is suggested to combine your own needs and actual situation, and at the same time pay attention to protecting personal privacy and information security.