Top plagiarism checker AI tools

Writing

QuillBot is an AI-powered writing assistant that helps users paraphrase, check grammar, summarize content, and generate ideas in one platform. It combines tools like paraphraser, AI chat, plagiarism checker, and translator to improve writing clarity, accuracy, and productivity across academic, professional, and everyday tasks.

AI Agent

Smodin brings writing, rewriting, plagiarism checking, AI detection, humanization, research, summarization, and translation tools into one accessible workspace. Designed for students, teachers, writers, and professionals, it helps users move from initial ideas to refined content while reducing the need to switch between multiple writing and research applications.

AI Agent

Copyleaks (copyleaks.com) is a comprehensive enterprise AI content detection, plagiarism prevention, and GenAI governance platform that identifies AI-generated text, images, video, and code across 30+ languages with over 99% accuracy.

AI-Detection

Originality AI is an AI content detection and plagiarism checking tool designed for publishers, agencies, and content teams. It scans text to identify AI-generated content, check originality, and highlight readability or quality issues—helping ensure content is human-like, unique, and trustworthy before publishing.