Plagiarism Check using Google’s Search API
This project is inspired by an incident were somebody tired to pass off material from a public document found in the Internet as his own. Fortunately, a Google search was done on a random paragraph to yield surprising results. Try it out!
The system only supports text files for now. It basically reads a random sentence from the document and does a Google search on it. It will display the top ten (10) results. From here you can see if there were verbatimly copied portions. The system is by no means full proof. But, it helps.

May 17th, 2006 at 9:51 pm
I came here through Online Responsibility.
This project is interesting. Any update on this, how is it going? any plans of releasing the code you’ve got - for people to breed on it and expand?
May 17th, 2006 at 10:17 pm
Of course, I plan to release it as open source. I just did not know that there was interest in the project like this. Any feedback on the tool? Let me package the code a bit before release. Just note that it would be ALPHA quality software
May 21st, 2006 at 12:26 am
[…] A lot of people emailed me asking if I could release the code for my PHP-based Google-powered Plagiarism Checker. Ok. I did not have much time to clean it up so please be kind. It can be downloaded from this link (Right click the link and save as). All you need is the Nusoap or PHP SOAP library to use this script. Have fun! […]
May 21st, 2006 at 12:27 am
Source code can be found here: http://hip2b2.yutivo.org/2006/05/21/plagiarism-check-source-code/. Good luck!