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7 Best Plagiarism Checker softwares: Paid & Free & Target User

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Written by
20 May 2023
free plagiarism tool 2023

Plagiarism checker software is a tool that assists in scanning the content of a document and cross-referencing it with published materials on the internet. These tools alert users to whether the content is duplicated or not.

Content marketers need to use tools to check spelling and grammar because:

  • Spelling and grammar errors can damage your brand’s reputation. When potential customers see mistakes in your content, they may be less likely to trust your brand. This is especially true if your content concerns a technical or complex topic.
  • Errors can make your content less readable. When your range is full of mistakes, it can be difficult for readers to understand what you’re trying to say. This can lead to them losing interest in your content and not taking any action.
  • Errors can make you look unprofessional. If you’re a content marketer, you’re trying to position yourself as an expert in your field. These errors can make you look unprofessional and less credible.

Here are the best 7 plagiarism checker softwares currently available. While you can find lists of the leading tools, the information could be more complete, and the user experience could be better. Therefore, the following list is worth considering:

1. Turnitin

Turnitin is a plagiarism checker software that is well-known and widely used in academic environments. Turnitin ensures that written content is unique and quickly detects copied content from various sources. This tool is popular among teachers because it allows students to submit essays directly through the system. However, a common user error (not the service provider’s) is misconfiguration, which can result in a high plagiarism percentage when checking the same document for the second time.

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Quick review of the best free and paid plagiarism checking software. In the picture: Turnitin account login interface

Limitations of Turnitin plagiarism checking software:

Like any tool or software, Turnitin also has its limits. Here are four drawbacks of this tool:

  • Exclusivity: Turnitin software is only used in academic environments and has very limited user access. Only some people, including teachers and students, can access and use it.
  • Restricted account registration: Users cannot register for a Turnitin account online; instead, they must go through the software developer. To gain access to the platform, you must contact their sales team directly and be approved as a partner.
  • Inconsistent transaction costs: The cost of purchasing and renewing Turnitin accounts needs more transparency and is ambiguous, as prices will vary between buyers and are not publicly disclosed. Instead, users must negotiate and pay a service fee with Turnitin representatives.
  • Technological limitations: Some technical limitations exist, such as the tool only supporting text-based checks. Therefore, Turnitin may not detect copied images without accompanying author names. Additionally, delayed updates to the plagiarism detection index can significantly affect the software’s accuracy in detecting plagiarism.

Every plagiarism checker software has its strengths and weaknesses. In addition to the Turnitin software, I suggest some other prominent copying tools for everyone to consider.

2. Quetext – 100,000 words per month

Quetext is a copying checking software that supports credit-based payment. It allows you to “pay as you go” based on the length of the document being scanned. This tool is quite popular among students, teachers, and content creators. In addition to checking for plagiarism, Quetext helps generate citations when it detects copied content (similar to QuillBot’s feature).

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Quetext plagiarism checker software

Highlighted features of Quetext:

  • ColorGradeTM Technology: This technology assists in visually and quickly detecting and eliminating plagiarism, making it easier for users to edit and make their content more unique.
  • No user limitations: Users can easily set up an account and access the Quetext software without significant barriers. In addition to the free version, Quetext offers a Pro package with advanced features for only $10 per month.
  • Speed: Quetext provides comprehensive and fast service. The website does not display advertisements for both the free and paid versions, allowing users to focus on editing content instead of waiting for ads to load.

Target Users:

  • Content creators: Access and use Quetext anytime without being delayed by software maintenance or waiting for access permission.
  • Educators: With a monthly subscription plan, teachers can quickly check the plagiarism of students’ essays with a maximum limit of 100,000 words per month.
  • Flexible classroom platform: Quetext is also widely used by students, allowing a maximum plagiarism check of up to 2,500 words and completely free of charge.

Although Quetext is good, Turnitin or Grammarly is sometimes better. I will directly compare these plagiarism checking tools in a future article.

3. Grammarly

Grammarly is well-known as a tool for checking English grammar in text (not supporting plagiarism check for English text, and not supporting plagiarism check for English text). Additionally, with the premium version and GrammarlyGO version, users can use it to check for plagiarism. Grammarly offers different paid service packages depending on the purpose of each user.

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The plagiarism check feature on Grammarly is only fully used when you subscribe to the Grammarly premium plan

Highlighted Features of Grammarly:

  • Content feedback feature: Grammarly provides an advanced grammar checker and offers appropriate grammar editing suggestions, helping optimize the content of the text.
  • Uniqueness measurement: The uniqueness score in Grammarly indicates the percentage of plagiarism in the text, allowing users to edit the content to reduce this score.

Target Users:

  • Businesses: Grammarly’s plagiarism checking tool often offers discounted fees for business service subscriptions.
  • Content production: Copywriters and entrepreneurs can use Grammarly to ensure they create highly unique content, thereby increasing brand and product recognition.

4. Copyscape – 100,000 words per month

Copyscape is a special online plagiarism detection software that supports various user types. However, its disadvantage may be the relatively high price. In addition to plagiarism checking, the software also provides the CopySentry feature, which helps businesses monitor websites to detect content theft.

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Copyscape is considered the best plagiarism checker software but it is quite expensive if you use it continuously

Highlighted Features:

  • Batch search: Copyscape allows users to check multiple content pieces simultaneously for plagiarism, up to 10,000 pages at once.
  • Exclusion list: Users can create an exclusion list to filter out certain websites from the plagiarism checking process (such as owned or known websites, for example, if you use 2 websites with the same content).
  • WordPress integration: This integrated feature allows users to check for plagiarism directly while writing content in WordPress.

Target users

  • Content creators: Access and use Quetext anytime without being delayed by software maintenance or waiting for access permission.
  • Educators: With a monthly subscription plan, teachers can quickly check students’ essays with a maximum limit of 100,000 words per month.
  • Flexible classroom platform: Quetext is also widely used by students and learners, allowing for a full essay check of up to 2,500 words and completely free.

Although Quetext is quite good, it sometimes falls short compared to Turnitin or Grammarly. I will directly compare these plagiarism checking tools in a future article.

5. DupliChecker – 1,000 words per check

DupliChecker is an online plagiarism checking tool that allows all users access and usage, including free and paid service plans. However, the software needs to be more comprehensive in accurately determining the level of plagiarism.

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Dupli Checker Tool

DupliChecker is a free (with a paid plan) plagiarism checker software, but it’s checking capability could be better than the tools mentioned above.

Key features of DupliChecker:

  • Integrated grammar checking: Similar to Grammarly, Dupli Checker also supports grammar checking in the text.
  • Free to use: DupliChecker can be used ultimately for free if users check the content in small data portions (small text paragraphs) at a time.
  • Unlimited usage: This platform can be used frequently to check text content, with a text length limit of only 1,000 words per check.

Target users:

  • Short-term use: Dupli Checker is suitable for one-time plagiarism checks, as it is cost-effective and quick.
  • Flexibility: Users can copy and paste text content, upload various file types, or directly input the URL of any website to check for plagiarism in that website/text file.

6. PlagScan – $5.99 per month

PlagScan is a popular online plagiarism checking tool, particularly in Germany. It accepts various file formats such as PDF or Word documents. However, with an outdated database, PlagScan sometimes struggles to accurately determine the copying level.

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Check for plagiarism with PlagScan

Key features of PlagScan:

  • PDF printing: PlagScan allows users to print reports and supports text editing.
  • Affordable but not free: Although users can sign up for a free account on PlagScan, they can only fully utilize the software when they pay. The service packages are affordable, starting at $5.99 per month.

Target users:

  • LMS integration: For educational systems using learning management systems (LMS), PlagScan can be integrated to check for plagiarism within the LMS directly.
  • Educators: Schools can purchase business service packages to check for plagiarism and verify students’ work.
  • Businesses: PlagScan offers suitable pricing for businesses with multiple users requiring access rights.

7. Viper

Viper is an online plagiarism checker software available on scanmyessay.com. It is user-friendly and an excellent choice for content written in languages other than English. However, the service fee of Viper depends on the length of the text to be checked. Additionally, users will lose content confidentiality as the website will publish the work publicly after a certain period.

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Plagiarism Checker Viper

Key features:

  • Multi-language support: Supporting plagiarism checks in multiple languages is a standout feature of Viper compared to other plagiarism checking tools.
  • Pay-as-you-go: Users do not need to create an account on Viper; instead, they can purchase credit packages when they need to use the software.

Target users:

  • Multi-language content: Viper supports plagiarism checks in various languages, including English.
  • One-time use: With infrequent usage, users can purchase a paid subscription package with a specific text length for each check (similar to Copyscape, pay as you go).

8. Which plagiarism checking software to choose?

The above provides an overview of the features and characteristics of some of the best plagiarism checking tools available today. You can choose the most suitable software depending on your purpose and usage needs.

There are some criteria to consider when choosing plagiarism checking software. Some of the most important factors include:

  • Accuracy: The software should be able to identify plagiarized content accurately.
  • Reliability: The software should be reliable and consistent in its results.
  • Ease of use: The software should be easy to use for both students and instructors.
  • Cost: The software should be affordable for both students and institutions.
  • Features: The software should have a range of features that make it useful for plagiarism detection, such as the ability to compare documents against a variety of sources, the ability to generate reports, and the ability to integrate with other systems.

In addition to these factors, it is also essential to consider the specific needs of your institution or department when choosing plagiarism checking software. For example, suppose you are looking for software that can be used to detect plagiarism in a variety of languages. In that case, you will need to choose a different software than if you are only looking for software that can detect plagiarism in English.


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