As plagiarism is a major issue, the scientific community faces across the world, I want to know if there are any free tools or websites which are authentic and detect plagiarism with ease and high accuracy.
Pick an uncited and unusual phrasing or peculiar combination of words from the middle of the student's text. Paste it, free of charge, into Google and Scholar. Repeat until satisfied. Here is an example that I caught this week from a final draft PhD: "Design of experiment is a structured technique that is used to determine the relationships that exist between factors that affect an experimental process. "
Be aware that Desktop Plagiarism Scanner sends your private files to the cloud, and the program may be difficult to uninstall. Viper also has problems.
My dear @Dhirendra, there are many colleagues that are looking for same s/w as You are. Maybe You should visit their threads in order to get some more valuable answers, if You have not done it already! The links follow!
Plagtracker for FREEMIUM http://alternativeto.net/software/turnitin/?license=free UNPLAG FOR COMMERCIAL (based on alternativeto.net popularity) Unfortunately we lack a reliable & 100% OpenSource
ALSO CHECK THIS TEXT ADDED TO SIMILAR AND PREVIOUS/RECENTS SIMILAR ANSWERS ON RG, there you fill find a huge plethora of options. Being the best list of all the top 10 https://elearningindustry.com/top-10-free-plagiarism-detection-tools-for-teacher and the 26 TESTED EFFICACY http://plagiat.htw-berlin.de/software-en/2010-2/. My academic institution uses Turnitin so it must count as a reference, so check for the one used at your institution library!! they must or can grant you access if you're teacher...
(THIS my-text tries to summarize a revision to the six RG question) I haven't used plagiarism cheking software, but the provided answer are based on concise and popular users who insistently tried to persuade us NOT USING VIPER, because suspiciously they sells the provided docs for revision)
Better to use authentic university provided link/source. Don't waste your document with free software. Never send your document to any unknown. Consult your library/laboratory/supervisor is a better option.