Q. Do we have plagiarism checkers/detectors I can use?

Here is a resource to help you understand what exactly constitutes plagiarism. 

The library does not provide mediated access to any plagiarism-detection software. 

However, Darden Business School has a page on avoiding plagiarism, including links to three readily available plagiarism detectors: WriteCheck, Plagramme, and Grammarly. The pros and cons of each software are listed and should be taken into careful consideration before using. These resources are provided on an individual level, so you would need to create an account for any of them and contact them if you have any technical difficulties with them. 

Also Lou Bloomfield has posted software to check for plagiarism - http://plagiarism.bloomfieldmedia.com/wordpress/software/