PlagiaShield is described as 'Plagiarism is a plague for website owners. Its scale is overwhelming' and is an app in the Social & Communications category. There are more than 10 alternatives to PlagiaShield for a variety of platforms, including Online / Web-based, Windows, Google Chrome, Google Drive - Docs and Firefox. The best alternative is Unicheck. It's not free, so if you're looking for a free alternative, you could try Copyscape or Plagiarism Checker X. Other great apps like PlagiaShield are Viper (Paid), PlagiarismSearch (Paid), PlagiarismCheck.org (Paid) and Turnitin (Paid).