Best Free Plagiarism Checkers for 2026
Find the best plagiarism checker tools. Compare top plagiarism checker providers by features, prices, and benefits. Dive into our plagiarism checker comparison list to find the best tools & software suited for your business needs
Last updated: September 2026
1
Grammarly
4.2
Free plan available
Starting from: $0/mo
- Works in many applications
- Streamline text effectively and as you intend
- User-first security complies with privacy regulations and frameworks
- Offers rewriting suggestions that can help decrease plagiarism percentage
- Mostly accurate in finding plagiarized sources
- Catches even common phrases
- Plagiarism checker is not available in the free plan
- Plagiarized sources do not match in some cases
- Not reliable for edited or paraphrased texts
1
Grammarly
Free online writing assistant
Free plan available
Free online writing assistant
- Works in many applications
- Streamline text effectively and as you intend
- User-first security complies with privacy regulations and frameworks
- Offers rewriting suggestions that can help decrease plagiarism percentage
- Mostly accurate in finding plagiarized sources
- Catches even common phrases
- Plagiarism checker is not available in the free plan
- Plagiarized sources do not match in some cases
- Not reliable for edited or paraphrased texts
Starting price $0/mo
2
ProWritingAid
3.4
Grammar & plagiarism checker all-in-one
Free plan available
Starting from: $0/mo
- Gives clear, easy steps to improve writing
- Secure and private
- Provides detailed reports
- Real-time, highly detailed feedback that can help decrease plagiarism score
- Reliable plagiarism checks
- Plagiarism checker costs extra
- Slow plagiarism analysis
2
ProWritingAid
Grammar & plagiarism checker all-in-one
Free plan available
Grammar & plagiarism checker all-in-one
- Gives clear, easy steps to improve writing
- Secure and private
- Provides detailed reports
3.4
Read review- Real-time, highly detailed feedback that can help decrease plagiarism score
- Reliable plagiarism checks
- Plagiarism checker costs extra
- Slow plagiarism analysis
Starting price $0/mo
3
Copyscape
4.5
7-Days Free Trial
Starting from: $0.03//200 words
- Integrated with many popular content sites
- Scans the web daily for copies of content
- Sends alerts of stolen content via email
- It shows you where your content has been published without your permission.
- It gives you the option to take action against the offender.
- You can directly compare text between two sources or websites.
- Automated checks provided in Copysentry plans saves you time and give ease of mind against plagiarism.
- This leads to broken links if the offender removes the content.
- It shows you unoriginal content even if it's not an infringement (e.g., quotes).
- The per-word pricing for Copyscape credits can easily build up when checking many documents or pages, making it less accessible for students.
3
Copyscape
Powerful & popular plagiarism detection
7-Days Free Trial
Powerful & popular plagiarism detection
- Integrated with many popular content sites
- Scans the web daily for copies of content
- Sends alerts of stolen content via email
4.5
Read review- It shows you where your content has been published without your permission.
- It gives you the option to take action against the offender.
- You can directly compare text between two sources or websites.
- Automated checks provided in Copysentry plans saves you time and give ease of mind against plagiarism.
- This leads to broken links if the offender removes the content.
- It shows you unoriginal content even if it's not an infringement (e.g., quotes).
- The per-word pricing for Copyscape credits can easily build up when checking many documents or pages, making it less accessible for students.
Starting price $0.03//200 words
4
PaperRater
2.4
Free plan available
Starting from: $0/mo
- Free online proofreading
- Immediate results using Ai
- Fast, free, requires no downloads or signups
- No need to sign up to use features
- Speedy reports
- Ads can be annoying
- Inaccurate and outdated plagiarism, grammar, and spelling detection
- Outdated user interface
- Very limited customer support
4
PaperRater
Free online grammar & plagiarism checker
Free plan available
Free online grammar & plagiarism checker
- Free online proofreading
- Immediate results using Ai
- Fast, free, requires no downloads or signups
2.4
Read review- No need to sign up to use features
- Speedy reports
- Ads can be annoying
- Inaccurate and outdated plagiarism, grammar, and spelling detection
- Outdated user interface
- Very limited customer support
Starting price $0/mo
5
Quetext
3.7
Free plan available
Starting from: $0/mo
- DeepSearch™ technology
- Original writing, made easy
- Rich & intuitive feedback
- Impressive plagiarism analysis that goes beyond word matching
- Useful citation assistant to help address plagiarized phrases
- Fast customer service
- Lack of any integrations makes it less convenient to use
- Free version only allows limited reports before it prompts you to upgrade
5
Quetext
The #1 tool for plagiarism detection
Free plan available
The #1 tool for plagiarism detection
- DeepSearch™ technology
- Original writing, made easy
- Rich & intuitive feedback
3.7
Read review- Impressive plagiarism analysis that goes beyond word matching
- Useful citation assistant to help address plagiarized phrases
- Fast customer service
- Lack of any integrations makes it less convenient to use
- Free version only allows limited reports before it prompts you to upgrade
Starting price $0/mo
* Featured prices and terms can be updated. Free offers may include additional terms.