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10 Best Quillbot Alternatives (Free & Paid)

Compare the best Quillbot alternatives for plagiarism detection, AI detection, and content integrity. Find the right tool for students, educators, and writers.

The increase in AI writing and the larger amount of people using AI writing tools has certainly contributed to the increasing popularity of AI writing tools such as Quillbot, one of the leading tools for paraphrasing and rewriting documents. See our QuillBot AI Checker review for an in-depth look. However, the growing number of people who are utilizing AI generated documents has created a considerable demand for tools that do more than just rewrite; for instance, detecting plagiarism, detecting patterns of AI generated content and protecting the integrity of the content that is being rewritten have all become increasingly important.

So, finding the best Quillbot alternatives is essential.

Going forward, if you are a student, educator, copywriter, or marketer, simply paraphrasing will no longer be sufficient to aid you in achieving your goals, and you will want to seek additional resources that will help verify the originality of any writing, improve the quality of any writing produced, and provide some protection against being flagged for using any AI writing processes that may be present in your writings.

In this article, we identify 10 excellent alternatives of Quillbot (some free, some paid) that provide you with additional tools to verify the originality of your writings to aid you in avoiding any potential flagging resulting from using AI processes in your writings.

Content Integrity Illustration

Why Look for Quillbot Alternatives?

Quillbot is a strong tool for paraphrasing, but it has limitations when it comes to content integrity. Here's how Quillbot falls short — and what a modern writing workflow actually needs.

Where Quillbot Falls Short

Common gaps users run into

  • Limited plagiarism detection capabilities
  • Limited contextual analysis for originality
  • AI detection is not as advanced as dedicated tools
  • Over-reliance on rewriting can still trigger plagiarism or AI flags
  • Lack of a comprehensive citation tool
What Modern Workflows Need

An all-in-one content integrity stack

  • Plagiarism detection
  • AI detection
  • Writing assistance
  • Content refinement (humanization, tone, clarity)
In the end, paraphrasing does not equal originality. The best Quillbot alternatives combine multiple capabilities into a single workflow — so you can rewrite, verify, and refine without switching tools.
In This Guide
  1. Quetext
  2. Grammarly
  3. Copyleaks
  4. Scribbr
  5. Originality.ai
  6. Copyscape
  7. DupliChecker
  8. Winston AI
  9. Viper
  10. Plagiarism Checker X
All pricing is approximate and may vary. Last updated April 2026.

10 Best Quillbot Alternatives (Free & Paid)

Quetext Best Overall

All-in-one content integrity and writing platform

Quetext is one of the most powerful alternatives to Quillbot because it focuses on content integrity rather than just rewriting. Although Quillbot does a great job at paraphrasing content, Quetext takes integrity of the content into consideration and ensures it is original, has proper citations and is not at risk for AI detection. This is a tremendous benefit in academic, business and publishing environments, where accuracy and proper sources are highly valued.

What truly differentiates Quetext is its ability to combine plagiarism detection, AI detection, AI Summarizer, citation generator and AI humanization within a single workflow. It also includes AITutorMe (Paraphrasing Tool) to refine your drafts. Instead of jumping between multiple tools, users can scan, edit, improve, and recheck , all in one place.

Why it's better than Quillbot

Although Quillbot does an excellent job at assisting writers with paraphrasing, Quetext takes things up another level by allowing writers to verify their own original work and potentially provide additional insights to make the writing even better than it was before. Not only does it help to change the sound of the writing but also makes certain that the author's writing is credible, contains proper citations and is completely original. Quetext can also assist users in verifying the existence of plagiarism in their own writing, as well as other aspects of the writing such as being able to determine whether the author created an original piece of writing using AI or globalization techniques.

Pricing

Free Plan
1,000 words
Essential , $8.25/mo Annual
Plagiarism checker, AI detection, summariser, AI humanizer and more
Plagiarism Only , $5.49/mo Annual
Dedicated plagiarism checking plan
AI Detector Only , $7.99/mo Annual
Dedicated AI detection plan

Key Features

  • DeepSearchContextual plagiarism detection that goes beyond surface-level matching
  • AI DetectorSentence-level insights into AI-generated content
  • AI HumanizerMake AI-assisted content sound more natural and human-like
  • Citation GeneratorAutomatic citations in APA, MLA, and other formats
  • Bulk ScanningScan 20-100 files at once for efficient workflow
  • Grammar Checker & AITutorMeParaphrasing tool and grammar improvements built in

Best For

  • StudentsVerify originality and generate proper citations for academic work
  • Educators & InstitutionsCheck submissions for plagiarism and AI-generated content
  • Content Writers & BloggersEnsure content is original and credible before publishing
  • Marketers & ProfessionalsMaintain content integrity across marketing materials
2

Grammarly

Writing quality, grammar, and clarity

Grammarly is widely known as a writing assistant, but it also offers plagiarism detection and AI-related features in its premium plans. While it's not a dedicated plagiarism tool, Grammarly is helpful for improving readability, tone, and clarity. Its suggestions can make content more polished, which is useful after rewriting or drafting. However, Grammarly's plagiarism checker is relatively surface level compared to tools like Quetext. It focuses more on writing quality than deep originality analysis. See our Grammarly plagiarism checker review for more detail.

Pricing

Free
Grammar and basic writing suggestions
Premium , ~$12/mo Annual
All Free features plus tone checks, sentence rewrites, plagiarism checker, and AI detection
Business Plans
Higher per-user pricing for teams

Key Features

  • Advanced Grammar & ToneDetailed grammar, tone, and style suggestions
  • Originality ScoreBasic plagiarism detection in premium plans
  • Chrome ExtensionWorks across browsers and applications

Best For

  • WritersFocusing on clarity, grammar, and tone improvements
  • ProfessionalsImproving communication quality in emails and documents
3

Copyleaks

Enterprise-grade AI and plagiarism detection

Copyleaks is a powerful plagiarism detection and AI content analysis tool used throughout higher education and enterprises because of its scalability and integration options. Compared to Quillbot, which is mainly used for rewriting text, Copyleaks is an excellent option for those looking for a reliable means of verifying the authenticity of content. In addition to its features as a content verification tool, Copyleaks also provides the ability to detect and report on instances of plagiarism in technical fields and across multiple mediums such as coding languages and images.

Pricing

Starter , ~$13.99/mo Annual
Core plagiarism and AI detection features
Higher Tier , ~$74.99/mo Annual
Advanced features and higher usage limits
Enterprise
Custom pricing for large organizations

Key Features

  • AI + Plagiarism DetectionComprehensive content verification combining both checks
  • LMS IntegrationsSeamless integration with learning management systems (e.g. Canvas and Moodle)
  • Code & Image DetectionPlagiarism detection for source code and images

Best For

  • Universities & InstitutionsLarge-scale academic integrity management
  • Enterprise TeamsLarge-scale content verification across organizations
4

Scribbr

Academic plagiarism detection and proofreading

Scribbr provides support exclusively for students and academics. It uses Turnitin's databases (turnitin.com) to help it detect academic plagiarism. Whereas Quillbot can assist with several different types of writing, Scribbr provides only academic work and correcting those works. Scribbr also provides proofreading options as another level of service. However, Scribbr's pricing model (per document) can be limiting for frequent users.

Worth noting

Scribbr prices per document rather than by subscription, which can add up quickly for students submitting multiple papers. It may be a better fit for occasional, one-off checks.

Pricing

Free Version
Limited basic insights only
Up to 7,500 words , $19.95
Per-document plagiarism check
Up to 50,000+ words , $39.95
Per-document plagiarism check for longer works

Key Features

  • Academic Plagiarism DetectionPowered by Turnitin's extensive database
  • Citation SuggestionsHelps format references correctly
  • Professional ProofreadingHuman proofreading services available

Best For

  • Students & ResearchersAcademic paper verification and citation support
  • Academic PublishingEnsuring originality in scholarly publications
5

Originality.ai

AI detection and fact-checking for publishers

Originality.ai is built for publishers, SEO teams, and content marketers who need to ensure content is both original and human written. It goes beyond plagiarism detection by offering fact checking and AI detection, making it particularly useful in the era of AI-generated content. However, it is not designed for students, which limits its accessibility compared to other tools.

Pricing

Monthly , $12.95/mo Annual
Up to 100,000 words per month
Pay-as-you-go , $30
3,000 credits for flexible usage
Higher Tiers , ~$136.58/mo Annual
Extended limits for high-volume users

Key Features

  • AI DetectionHigh-accuracy AI content identification
  • Fact-CheckingVerify claims and statements in content
  • Team CollaborationTools for managing content teams

Best For

  • Content Teams & PublishersEnsuring content quality and originality at scale
  • SEO-Driven WorkflowsVerifying content authenticity for search performance
6

Copyscape

Website content monitoring and plagiarism detection

Copyleaks's strong capabilities make it ideal for identifying plagiarism as well as analyzing AI-generated content. Due to its scalable and integrated nature, it has become one of the most used tools by businesses and schools. Copyleaks is different than other tools, such as Quillbot, which help you rewrite material with a guarantee of original work but are not specifically related to detecting any level of plagiarism. Additionally, Copyleaks can detect plagiarism in many formats (code and images) which makes it useful in a variety of scenarios, such as technical and cross-disciplinary usage. For more options, see our guide to Copyscape alternatives.

Pricing

Free Version
Basic checks for web content
Premium , Pay per check
~$0.03 for first 200 words; ~$0.01 per additional 100 words

Key Features

  • Website Plagiarism DetectionScan web pages for duplicate content across the internet
  • Batch ScanningCheck multiple pages at once
  • Content Monitoring (CopySentry)Automated monitoring for content theft

Best For

  • Bloggers & Website OwnersProtecting web content from duplication
  • AgenciesManaging and monitoring content across multiple client pages
7

DupliChecker

Free, fast basic plagiarism checks

DupliChecker is a free-to-use plagiarism detection and check tool. It allows content checks to be performed quickly and easily using its basic features, though due to the lack of some features widely available on paid versions, users find that DupliChecker can offer them quick proof of content validity or usefulness for very low-stakes purposes. Because there is a considerable amount of ad-supported or sponsored content at DupliChecker, it is probably not a suitable source for any important work, due to lower accuracy rates and the amount of advertising content.

Pricing

Free Plan
Limited word count per check
Basic , $7.99/mo Annual
Expanded limits and fewer ads
Pro , $15.99/mo Annual
Full features and higher limits

Key Features

  • Free Plagiarism CheckingBasic plagiarism detection at no cost
  • Grammar CheckerSimple grammar and spelling corrections
  • Easy-to-Use InterfaceSimple, straightforward design for quick checks

Best For

  • Quick ChecksFast, informal plagiarism scans
  • Casual UsersLow-stakes content verification
  • Budget-Conscious UsersFree option for basic needs
8

Winston AI

Dedicated AI content detection with detailed reporting

Winston AI is quickly becoming a popular choice among those looking for a dedicated service to check for AI-generated content. The service has comprehensive reports with detailed results of tests done on the AI generated content, and it is formatted in such a way that customers will find it easy to work with the reports when developing their partnerships with the newly created material. Unlike some of the other available services such as Quetext (but is still a valuable tool), Winston has established itself as a credible source to demonstrate its ability to find all forms of AI-oriented material.

Pricing

Free Trial
Available to try the service
Basic , $4.32/mo Annual
Up to 80,000 credits per month
Advanced , $7.17/mo Annual
Up to 500,000 credits per month
Pro , $12.17/mo Annual
Highest tier with maximum limits

Key Features

  • AI Detection AccuracyHigh-precision detection of AI-generated text
  • Readability AnalysisEvaluate content readability alongside AI detection
  • Multi-Format SupportScan documents in various file formats

Best For

  • Content TeamsVerifying content authenticity before publishing
  • EducatorsMonitoring student submissions for AI-generated content
9

Viper

Credit-based plagiarism checker with a large database

Viper is another plagiarism detection software with a very adaptable pricing model. It does not offer users membership, rather it allows users to check their work a little less often, and at lower cost by working on credits.

Pricing

Free Version
Available with conditions (content may be shared)
Paid Credit-Based
~$7+ per scan depending on word count

Key Features

  • Fast ScanningQuick plagiarism detection results
  • Large DatabaseExtensive content database for comparison
  • Flexible PricingCredit-based model for pay-as-you-go usage

Best For

  • One-Off ChecksOccasional plagiarism verification
  • Budget-Conscious UsersPay only when you need to scan
10

Plagiarism Checker X

Desktop-based offline plagiarism detection

Plagiarism Checker X is a desktop-based tool designed for offline use. This makes it unique among Quillbot alternatives, as it doesn't require uploading content to the cloud. It's particularly useful for users who prioritise privacy and want to keep their documents local. However, it lacks advanced AI detection features compared to modern tools.

Pricing

Free Plan
Limited features available
Premium , $39.95 One-Time
Full features with a single payment
Business , ~$147.95
Multi-user license for organizations

Key Features

  • Offline Plagiarism DetectionScan documents without internet connection
  • Multi-Document ComparisonCompare multiple documents against each other locally
  • One-Time PaymentNo recurring subscription fees

Best For

  • Privacy-Focused UsersKeep documents local without cloud uploads
  • Offline WorkflowsPlagiarism checking without internet dependency

How to Choose the Right Quillbot Alternative

Choosing the right tool depends on what you need most. Here are four key factors to consider:

Deep Plagiarism Detection

Look for tools that go beyond surface-level matching. Contextual plagiarism detection (like Quetext's DeepSearch) catches paraphrased and restructured content that basic checkers miss.

AI Detection Capabilities

As AI-generated content becomes more common, choose a tool that can identify AI-written text with sentence-level accuracy. This is essential for academic and publishing integrity.

Editing and Rewriting Support

Some tools combine plagiarism checking with writing improvement features. If you want to detect and fix issues in one workflow, look for integrated editing capabilities.

Humanization & Bulk Scanning

For teams and high-volume users, features like AI humanization and bulk file scanning save significant time. Consider tools that scale with your workflow needs.

Final Thoughts

Quillbot is a great starting point for rewriting, but it's not enough for ensuring originality in today's AI-driven world. The best Quillbot alternatives are those that help you verify originality, detect AI-generated content, improve writing quality, and maintain credibility.

If you want a complete solution, Quetext offers one of the most balanced and powerful options available , combining plagiarism detection, AI detection, humanization, citation generation, and more in a single platform.

Frequently Asked Questions

What are the best Quillbot alternatives?
There are several strong alternatives to Quillbot depending on your needs. For comprehensive content integrity, Quetext stands out with plagiarism detection, AI detection, humanization, and citation tools. Grammarly excels at writing quality, Copyleaks offers enterprise-grade detection, and Originality.ai focuses on AI detection for publishers. The best choice depends on whether you need plagiarism checking, AI detection, writing improvement, or a combination of all three.
Is there a free alternative to Quillbot?
Yes, several tools offer free versions with limited features. Quetext provides a free plan with 1,000 words, DupliChecker offers free basic plagiarism checks, and Copyscape has a free web-based checker. While free plans are useful for quick checks, paid plans typically offer deeper analysis, higher word limits, and more advanced features like AI detection.
Which Quillbot alternative is best for plagiarism checking?
If your main goal is detecting plagiarism, Quetext and Copyleaks are among the strongest options. Quetext's DeepSearch Technology provides contextual plagiarism detection that catches paraphrased content, while Copyleaks offers enterprise-grade scanning with LMS integrations. For academic use specifically, Scribbr uses Turnitin's database for thorough academic plagiarism detection.
Can Quillbot detect plagiarism?
Quillbot does offer a plagiarism checker, but it's not as advanced or thorough as dedicated plagiarism detection tools. It works for basic checks but may miss paraphrased content, contextual similarities, or AI-generated text. For reliable plagiarism detection, especially in academic or professional settings, a dedicated tool like Quetext provides much deeper and more accurate analysis.
How do I make AI content more human-like?
Making AI-generated content sound natural is essential for maintaining credibility. Tools like Quetext offer AI humanization features that automatically adjust tone, sentence structure, and phrasing to make content read more naturally. Key strategies include:
  • Using an AI humanizer tool to refine AI-assisted drafts
  • Varying sentence length and structure
  • Adding personal insights and examples
  • Running content through an AI detector to identify robotic-sounding sections
What should I look for in alternatives to Quillbot?
When choosing a tool, don't just focus on rewriting capabilities. Look for features that support overall content integrity: deep plagiarism detection that catches paraphrased content, AI detection to verify human authorship, citation generation for proper attribution, and humanization tools to refine AI-assisted drafts. The best alternatives combine multiple capabilities into a single workflow so you don't have to switch between different tools.

Ready to go beyond paraphrasing?

Quetext combines plagiarism detection, AI detection, humanization, and citation generation , all in one seamless workflow. No approval required.

Try Quetext for free View pricing