Rephrase.info
Paraphrasing
Effortlessly rephrase sentences with AI.
Like Plagiarism Detector, Rephrase.info is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
We've curated 48 of the best alternatives to Plagiarism Detector, ranked by feature overlap, topic similarity, user ratings, and popularity. Rephrase.info, Paraphrasing.io, and AISEO Free Paraphrasing Tool lead the list as the closest matches.
Updated May 18, 2026
The list includes 4 free alternatives, 5 freemium, and 39 paid, so whether you're looking for a no-cost replacement or a more capable paid tier, there's an option to compare. Plagiarism Detector itself is paid, which makes paid alternatives the most natural starting point.
Many of these tools cluster around use cases like Api, Content Creation, Paraphrasing, and Plagiarism Detection — the same problem spaces Plagiarism Detector addresses. Cross-referencing tools that overlap on multiple topics gives a more reliable signal than category alone, because two products in the same category can still serve very different workflows.
Our ranking weighs eight signals: shared category, topic overlap, feature overlap, name and description text similarity (via PostgreSQL's pg_trgm and tsvector), Bayesian-smoothed user ratings, pricing-model match, popularity, and editorial overrides. Scores are then normalized within each tool's own candidate pool so the top match always represents the strongest available alternative.
Use the table of contents below to jump to free or paid alternatives, or scroll down to compare each option side-by-side with Plagiarism Detector.
Ranked by compatibility score
Paraphrasing
Effortlessly rephrase sentences with AI.
Like Plagiarism Detector, Rephrase.info is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
Paraphrasing
Reword articles and essays with AI precision.
Like Plagiarism Detector, Paraphrasing.io is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
Paraphrasing
Rewrite content with one-click uniqueness.
Like Plagiarism Detector, AISEO Free Paraphrasing Tool is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
Paraphrasing
Free ChatGPT frontend with prompt library and chat history
Like Plagiarism Detector, RiteBot is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
Paraphrasing
Rewrite content instantly with powerful AI.
Like Plagiarism Detector, Paraphrasing Tool by ContentBot.ai is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
Paraphrasing
Rewrite text in 12 free modes across languages
Like Plagiarism Detector, Rephrasely is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
Paraphrasing
AI-powered paraphrasing for instant text rewrites.
Like Plagiarism Detector, Paraphrase Online is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
Paraphrasing
AI-powered paraphrasing for unique, high-performing content
Like Plagiarism Detector, Yaara AI Paraphrasing Tool is in the Paraphrasing category. Both are paid. Worth comparing on the detail page.
Paraphrasing
NLP text analysis and rewriting.
Like Plagiarism Detector, Tinq is in the Paraphrasing category. Tinq is freemium, while Plagiarism Detector is paid. Worth comparing on the detail page.
Paraphrasing
Paraphrase text in 15 modes for 100+ languages
Like Plagiarism Detector, Paraphrase Tool is in the Paraphrasing category. Paraphrase Tool is freemium, while Plagiarism Detector is paid. Worth comparing on the detail page.
Paraphrasing
Rewrite and rephrase text in multiple languages.
Like Plagiarism Detector, NeuralWriter is in the Paraphrasing category. NeuralWriter is free, while Plagiarism Detector is paid. Worth comparing on the detail page.
Paraphrasing
Undetectable AI paraphrasing that beats any detector.
Like Plagiarism Detector, Netus is in the Paraphrasing category. Netus is freemium, while Plagiarism Detector is paid. Worth comparing on the detail page.
Paraphrasing
AI-driven precision paraphrasing tool.
Like Plagiarism Detector, ParaphraseX is in the Paraphrasing category. ParaphraseX is freemium, while Plagiarism Detector is paid. Worth comparing on the detail page.
Paraphrasing
Instantly paraphrase text with high accuracy.
Like Plagiarism Detector, ToolSmart Free Paraphrasing Tool is in the Paraphrasing category. ToolSmart Free Paraphrasing Tool is free, while Plagiarism Detector is paid. Worth comparing on the detail page.
Paraphrasing
Rephrase text fluently with AI
Like Plagiarism Detector, Scribbr is in the Paraphrasing category. Scribbr is free, while Plagiarism Detector is paid. Worth comparing on the detail page.
Paraphrasing
Paraphrase content into clear, fluent messages.
Like Plagiarism Detector, Revrite is in the Paraphrasing category. Revrite is free, while Plagiarism Detector is paid. Worth comparing on the detail page.
Paraphrasing
AI magic for designers in Figma
Like Plagiarism Detector, TextWise is in the Paraphrasing category. TextWise is freemium, while Plagiarism Detector is paid. Worth comparing on the detail page.
Plagiarism Detection
Make your content 100% unique with AI-powered rephrasing.
Plagiarismremover shares 3 topics with Plagiarism Detector: Unique Content, Anti Plagiarism, and Plagiarism Detection. Both are paid.
Seo Content
Generate high-quality articles at scale with AI.
byword.ai shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
Plagiarism Detection
Detect plagiarism and AI-generated content instantly
Copyleaks shares 2 topics with Plagiarism Detector: Api and Plagiarism Detection. Both are paid.
Ai Content Detection
Instantly detect plagiarism and AI-generated content.
Copyleaks - Plagiarism detector shares 2 topics with Plagiarism Detector: Api and Plagiarism Detection. Both are paid.
Email Marketing
Create high-converting email sequences in seconds.
EmailWritr shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
Memes
Turn any text into AI memes
Supermeme.ai shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
Seo Content
AI writing tool to supercharge your content creation
Writerly AI shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
4 free and 5 freemium options.
3 more free/freemium alternatives listed below. Browse all Plagiarism Detector alternatives ↓
9 free or freemium alternatives to Plagiarism Detector on /tools/plagiarism-detector/alternatives.
39 paid options.
33 more paid alternatives listed below. Browse all Plagiarism Detector alternatives ↓
39 paid alternatives to Plagiarism Detector on /tools/plagiarism-detector/alternatives.
24 additional candidates
Free AI Detector by ContentAtScale shares 2 topics with Plagiarism Detector: Api and Plagiarism Detection. Both are paid.
Agility Writer shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
Jarside shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
Originality shares 2 topics with Plagiarism Detector: Api and Plagiarism Detection. Both are paid.
Zekai shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
ContGPT shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
Plagium AI Detector shares 2 topics with Plagiarism Detector: Api and Plagiarism Detection. Both are paid.
PuppiesAI shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
NexAI shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
Visionati shares 2 topics with Plagiarism Detector: Api and From $5. Both are paid.
ToleAI shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
AIHumanizer.ai shares 2 topics with Plagiarism Detector: Api and Anti Plagiarism. Both are paid.
Instructly shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
WikeAI shares 2 topics with Plagiarism Detector: Content Creation and From $5. Both are paid.
Image Generator by Leap shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
Rephrasy shares 2 topics with Plagiarism Detector: Api and Content Creation. Both are paid.
DLTranslator shares 1 topic with Plagiarism Detector: From $5. Both are paid.
Horseman shares 1 topic with Plagiarism Detector: From $5. Both are paid.
KlearStack shares 1 topic with Plagiarism Detector: Api. Both are paid.
Glean shares 1 topic with Plagiarism Detector: Api. Both are paid.
Kitt shares 1 topic with Plagiarism Detector: Api. Both are paid.
LightPDF shares 1 topic with Plagiarism Detector: Api. Both are paid.
Pixel Dojo shares 1 topic with Plagiarism Detector: Api. Both are paid.
BetterPic | AI Headshots shares 1 topic with Plagiarism Detector: Api. Both are paid.
Rephrase.info ranks as the highest-scoring alternative to Plagiarism Detector, based on shared category, topic overlap, feature similarity, and user ratings. Ratings are still being collected for this tool.
Yes — 4 fully free and 5 freemium alternatives are available, including Tinq, Paraphrase Tool, and NeuralWriter.
Rephrase.info is similarly priced (paid) and sits in the same category (Paraphrasing). View its detail page to compare features, integrations, and reviews side-by-side.
Top Paraphrasing alternatives include Rephrase.info, Paraphrasing.io, AISEO Free Paraphrasing Tool, and RiteBot. These tools share the same primary category and have meaningful topic overlap with Plagiarism Detector.
Neither Plagiarism Detector nor Rephrase.info has user ratings yet — be the first to review either tool to help future visitors compare them.