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Check Source Code for Plagiarism

Find unoriginal code and software similarity with the most advanced plagiarism detection solution. Investigate potential copied code by highlighting similarities to billions of sources on the web or from submitted peers. Check the similarity of two or more source codes and view highlighted matches.

Meaningful Results

Codequiry was built around source code detection, this means the results you get are meaningful and reliable. Submissions undergo rigorous checks (more) to ensure that code submissions are original. Put a stop to code copying from peers or the web.

Smart Algorithms

Codequiry looks beyond the cosmetics, finding similarities in logic patterns and unique style of code. Altering variables, whitespace, function names, comments, or many other cosmetic features will not affect overall similarity results. Our algorithm is constantly self-improving.

Extensive Reach

Codequiry compares code submissions both internally and externally. First, submissions are extensively checked against one another with our comprehensive peer to peer check. Then, submissions are checked against billions of sources of code on the web.

Detect code similarity and plagiarism easily

Find unoriginal code and software similarity with the most advanced plagiarism detection solution. Investigate potential copied code by highlighting similarities to billions of sources on the web or from submitted peers.

Import Files

Upload code and start checks

Specify the programming language, then drag and drop the submissions you wish to check plagiarism or similarity for. Run different types of tests: peer, database, or web check.

Get Results

See realtime progress

See realtime checking progress and get results back instantly when your checks are completed. Codequiry's average time from starting checks to receiving results is 1 minute.

Inspect Matches

View insights and detailed results

An overview of similarity results will be available in the form of cluster graphs, match tables and histograms. Inspect individual code submissions in detail, with highlighted snippets of matches found in source code, and other useful insights.

A plagiarism solution made just for source code

Codequiry's plagiarism engine runs against both internal and external sources to detect all forms of unoriginal code. Codequiry was built with the advanced requirements for detecting source code similarity and plagiarism.

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Peer Check

The most comprehensive test for checking similarity within a group of provided submissions. Compares the unique fingerprint of one code base to another, detecting logical similarites and instances of code similarity in a group of submissions.

Web Check

A test for plagiarism that compares code to over 100 million sources of code from major public and private repositories, as well as over 2 billion instances of code on the web. See similarities and highlighted matches to external sources.

Detailed results that matter

Codequiry's results are highly detailed and allow you investigate any suspicious cases of code plagiarism, allowing you to conclude with certainty if portion of code is copied.

  • Check against over 20 billion lines of public code
  • Measuring of software similarity online
  • 2D Graph of student similarity by distance (see clusters of similar submissions)
  • Matched snippets with detailed viewer
  • Pie chart of sources used in code
  • Automatically recognizes base code
  • See highlighted matches from billions of sources on the web
  • Estimated confidence level of overall submission originality
Get started

Supports over 20+ programming languages

Codequiry works with over 20 programming languages such as Java, C, C++, Python, C#, Go, PHP, Perl, SQL, Assembly, Ruby, XML, VB, Lisp, Javascript, Typescript, HTML, Haskell, Pascal, Matlab, Plain Text, and more!

Start checking source code
Our Mission

Codequiry aims to achieve an equally fair environment for fields relating to computer science by preventing the use of unoriginal code. The first step to preserving academic integrity and original source code starts here.

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