Best WP Content Defender Alternatives & Competitors in 2025

Copyscape is a free plagiarism checker.

Protect your reputation and improve your content quality by accurately detecting duplicate content and artificially generated text with the most accurate AI detection tool on the market.

paid $0.01 / One-off (100 words)

Build powerful web apps, and create your custom AI apps, no code needed!

Visit website freemium

Prevent Plagiarism in Published Works

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.

We strive to provide the most effective, secure and user-friendly plagiarism checking tool that champions originality: a privacy focused, effective and user-friendly plagiarism detector that merges innovative technology with user needs.

freemium $39.95 / One-off (Professional: 1 user license with unlimited scanning)

Build powerful web apps, and create your custom AI apps, no code needed!

Visit website freemium

PlagiarismSearch is online service that detects plagiarized content.

freemium $7.95 / Monthly

The plagiarism checker Unplag scans across the internet, repositories, open sources content and databases. It delivers real-time results and has no cached data.

We've helped more than 5 million students, teachers, and professionals identify potential plagiarism in their work.

PlagiarismCheck.org is a modern checker plagiarism and an accurate AI checker, that improves writing skills and saves teachers' time.

freemium $1.0 / Annually (An annual subscription per user starts at)

Detect chatGPT content for Free, simple way & High accuracy. OpenAI detection tool, ai essay detector for teacher. Plagiarism detector for AI generated text

GPTKit - ChatGPT and AI-Generated Text Detector Tool

freemium $5.0 / Usage

Free and Accurate AI Detector to Check AI Content