DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
Plagiarism Checker by C.A Apps - Plagiarism Checker is an educational app by C.A Apps comes up with features to allow users to instantly check their articles for plagiarism.
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
Research Experts - Research Experts app helps you in getting plagiarism monitoring, checking, and duplication removal services to get the text without any plagiarism.
Tiki Wiki CMS Groupware - Tiki Wiki CMS Groupware, also known as Tiki (or TikiWiki), is a full-featured, web-based, multilingual, all-in-one Free/Libre Open Source Software solution. Tiki can be used to create all kinds of web apps, portals, knowledge bases, intranets, etc.
Turnitin - Turnitin is preferred by educational institutions around the world for preventing plagiarism. Instructors at all levels of education can request that students use the service to submit papers, and Turnitin checks those papers for plagiarism.