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Instead of Plagiarism Detector
Plagiarism Detector alternatives
Plagiarism Detector combines document plagiarism checks with AI-generated-content detection and originality reports. Its desktop app compares text with the web, scientific papers, a PDAS database, local folders, or document pairs, while global searches use Google, Bing, and Yahoo. Reports export to PDF, CSV, or HTML, the AI checker supports 40 languages, and Unicode Anti-Cheating detects visually similar character substitutions. Desktop processing stays on the user’s PC during web checks, and PDAS can support on-premise organizational checking without an outside internet connection.
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Noplag
Free plan Open source APILinuxMac+3Multiplatform document and web plagiarism checking — Noplag adds Linux, macOS, API, self-hosting, URL submissions, and source-linked similarity reports, while Plagiarism Detector centers on web and Windows.
Free plan · paid from $9.99/mo · 14-day trial Visit site - 2
Dolos
Free plan Open source APILinuxMac+3Source-code similarity in education — Dolos compares programming submissions with language-aware parsing and code-overlap reports, unlike Plagiarism Detector’s document and AI-content focus.
Free plan Visit site - 3
Copyscape
Free plan APISelf-hostedWebOnline content and website duplicate checks — Copyscape focuses on web-content duplication, URL scans, WordPress integration, private indexes, and batch searches up to 10,000 pages.
Free plan Visit site - 4
Crossref Similarity Check
Paid APIWebCrossref member journal and manuscript screening — Crossref Similarity Check uses iThenticate and a scholarly database exceeding 78 million full-text items, but requires Crossref membership and DOI publishing.
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MOSS
Free plan LinuxWebNon-commercial programming-class plagiarism review — MOSS compares source code, highlights matching passages in HTML, and excludes expected shared code, while requiring human review of similarity.
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Originality.ai
Free plan APIExtensionWebAI-content and website scanning workflows — Originality.ai adds website crawling, scheduled scans, browser-extension analysis, Moodle integration, writing replay, and configurable AI allowances.
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PlagAware
Free plan APIWebLarge-scale multilingual web and text monitoring — PlagAware searches over 70 billion online documents, monitors text continuously, detects several AI systems, and supports permanent report links.
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JPlag
Free plan APILinuxSelf-hosted - 9
Plagiarisma
Free plan AndroidAPIExtension+2 - 10
DupliChecker
Free plan APIWeb - 11
PlagiarismCheck.org
Free plan APIExtensionWeb - 12
PlagiarismSearch
Free plan APIExtensionWeb - 13
PrePostSEO Plagiarism Checker
Free plan AndroidAPIiPhone+3 - 14
Smodin Plagiarism Checker
Free plan AndroidAPIExtension+2 - 15
Plag
Free plan Web - 16
Plagiarism Checker X
Free plan Windows - 17
Quetext AI Detector
Free plan APIExtensionWeb - 18
SmallSEOTools Plagiarism Checker
Free plan APIExtensionWeb - 19
Plagramme
Free plan Web - 20
Scribbr Plagiarism Checker
Free plan Web - 21
Viper
Free plan Web - 22
DrillBit
Paid AndroidAPIiPhone+1 - 23
Plagius
Free trial MacWebWindows - 24
StrikePlagiarism
Free trial APISelf-hostedWeb - 25
iThenticate
Paid APIWeb - 26
Plagiat.pl
Paid Web - 27
Turnitin AI Writing Detection
Paid Web
Readers may seek alternatives because the free demo covers 700 words per document, one document per session, and 10 checks total. Desktop use requires Windows, and PDAS connectivity varies by license. Other products shift the balance toward programming-code comparison, larger web indexes, browser extensions, APIs, self-hosting, scheduled scans, or academic publishing workflows. Compare source coverage, supported inputs, language range, batch capacity, report sharing, privacy handling, integration needs, and pricing before switching.
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