Crowdin - Localize your product in a seamless way
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.
POEditor - The translation and localization management platform that's easy to use *and* affordable!
iThenticate - Prevent Plagiarism in Published Works
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.
Urkund - Detect and check for plagiarism with URKUND