Plagiarism is a serious concern for journalists and high school/university students and professors alike. Make sure you aren’t plagiarizing with these 10 online services – or check that someone else isn’t!
1. TurnItIn

TurnItIn.com is one of the most notable services in plagiarism detection. Started by Four UC Berkeley graduates as a peer review application for their classes, TurnItIn has processed more than 60 million academic papers in 2011. The service does have a fee but free quotes are available online for educators.
2. iThenticate

Used more for professional and scholarly writing and research, iThenticate is used by well-known publishers like Oxford University Press. iThenticate’s Cross Check software appeals to the professional and scholar largely due to its database of more than 31 million articles and 67,664 books and journals.
3. Viper

Want to check your work for plagiarism but do not pay for TurnItIn? Go to Viper, the self-proclaimed “Free TurnItIn Alternative.” Unfortunately, despite its large database of academic essays and online sources and side-by-side comparisons, it is only available for Microsoft Windows users only.
4. PlagiarismChecker.com

PlagiarismChecker.com uses Google and Yahoo as their ready-made database, making it easy for teachers to use a search box to check pasted phrases from students’ work. There is also an “Author” setting for authors to see if anyone else has plagiarized their work online.
5. Plagiarism Detect

If you are looking for a thorough examination, turn to Plagiarism Detect. The system takes 5-7 minutes a page to scan, but the wait is well worth it. With a recently updated system and new more advanced algorithm, the system is supposedly able to scan text like a human would. This is due to its combination of multi-layered technology and SMART scanning.
6. Dustball Plagiarism Checker from University of Maryland

Dustball Plagiarism Checker was created by a University of Maryland student in 2002. Brian Klug created the system which allows users to paste entire papers into a search box, rather than picking and choosing segments. The premium version has a $8 subscription fee, but it supposedly has increased accuracy and gives users the option to upload Microsoft Word documents to be scanned.
7. Plagiarisma.net

Plagiarisma has two options for users to take advantage of – there is a search box option or a software download for Windows. Users can also choose from URLs, files in HTML, DOC, DOCX, RTF, TXT, ODT, or PDF formats to search and scan.
8. PlagiarismSoftware.net

Formerly known as Duplichecker, PlagiarismSoftware.net is as easy they come. Using a simple search box and checker to search for text or upload TXT files.
9. CheckForPlagiarism.net

CheckForPlagiarism.net’s service can scan papers in several languages and allows users to compare papers. While the service is supposedly between 35% and 70% lower in average cost than other competitors. It offers a basic $20 account meant for high school students, but only allows up to five document scans.
10. EVE2: Essay Verification Engine

Created in 2000, EVE is one of the oldest plagiarism system services but has an impressive resume of 150 million scans under its belt to date. Backed up by businesses like Rolling Stone and Salon, you can gain unlimited service with a 10-day-money-back guarantee for $29.99.
Students, educators, and journalists alike will find this list of plagiarism detection services useful and may give new options to researchers for finding sources. Whatever your budget, there is a service for you.