The current situation due to the coronavirus has forced the educational systems of half the world to take the telematic route to teach online. This has also forced to create different platforms to present works online: TGF, Word documents, university works… Often these platforms have anti-plagiarism tools that allow to detect plagiarism of texts, quotations and sources. Luckily, there are dozens of pages and anti-plagiarism programs that allow us to get ahead of these tools to detect plagiarism, as we will see below.
PLAGSCAN, WITH UP TO 2,000 WORDS FREE
This payment tool gives us up to 2,000 words for free, or what is the same, 20 PlagPoints, the currency used by the platform to pay for the use of its functions. The biggest advantage of this website is that it produces complete reports of the percentage of plagiarism of the texts, as well as a list of the web pages that are mentioned in the plagiarism detected by the tool.
- Access the website : plagscan.com
VIPER, THE BEST ALTERNATIVE TO TURNITIN
This is how Viper is announced, a powerful online anti-plagiarism tool that allows us to analyze, at least in theory, up to 30,000 words a week for free. It also has different paid versions whose system is based on credits. These credits, in turn, will allow us to analyze a certain number of characters and words.
For the rest, Viper stands out for having more than 10,000 million sources in its database. It also has the advantage that all analyses are performed privately, that is, they are not uploaded to any cloud.
- Access the website : https://plag.co/
PLAGIARISM CHECKER, BY Grammica.

Although the page is in English, Plagiarism Checker, by the people of Dupli Checker, is able to detect plagiarism in Spanish and, in general, of any other language that is thrown at it.
We can copy and paste texts of up to 1,000 words or upload a document in Word, PDF, Doc or DocX format, among many others. Automatically the web will show us the percentage of plagiarism in a personalized report along with the sources to which it is referenced. No registrations or payment gateways. Of course, the web has a lot of advertising. It is the price to pay for looking for plagiarism for free.
- Access the website : Plagiarism Checker
PAPERRATER, A 100% FREE ANTI-PLAGIARISM
One of the few totally free anti-plagiarism programs. Like the previous tool, PaperRate is all-English, yet it supports virtually any language.
It has two types of analysis, one more agile and another more rigorous but slow in turn. It also has different customization options that allow us to adjust the analysis to the type of document or work. Educational level (ESO, Baccalaureate, Degree, Master …), type of document (Essay, Thesis, Letter, Analysis …) and a long etcetera.
- Access the website: Paperrater.com
PLAGIARISMA, ANOTHER PARTIALLY FREE ANTI-PLAGIARISM
This website of British origin arrives as another free anti-plagiarism detector, or rather, partially free. In theory, text analysis is limited to 2,000 characters. However, if we register on the web we can analyze up to three documents per day.
It also has an affiliate system that gives us up to 5 dollars of credit for each person who registers with our link. It also has a program for Windows of only 4.2 MB of passage. Its functionality replicates, in essence, the functionality of the web.
- Access the website: plagiarisma.net
COPYLEAKS, FOR STUDENTS AND ANY TYPE OF TEXT
No, Copyleaks has nothing to do with Wikileaks. This website comes as a multifunctional tool capable of analyzing texts of different nature. Its focus is not limited to the academic field, but is open to any type of text that has a presence on the Internet: SEO texts, marketing campaigns, web pages, research papers, laws and so on. It is paid, although it supports document analysis with up to 10 pages of content.
- Access the website: copyleaks.com
QUETEXT, THE SIMPLEST ANTI-PLAGIARISM OF ALL
Probably the simplest plagiarism detector of all. No advertising. No pop-up messages. Simply type or paste the text you want to analyze and click on the relevant button. Automatically the web will analyze all the suspicious phrases and sources of the document to compare them with its internal sources. Then, Quetext will show us a bar with the percentage of plagiarism detected, as well as a list of web pages and articles with texts similar to those of the document.
Beyond the simplicity of the interface, the highlight of the web is its speed of analysis, much faster and more agile than other options we have just seen.
- Access the website: quetext.com
AND IF YOU JUST WANT TO COMPARE TWO WORD DOCUMENTS…
If we only want to compare a couple of documents in Word or PDF, none of the tools we have just seen will be worth it. For this purpose, the Google Docs application can solve the ballot perfectly. Of course, through the web platform. At the moment the application for mobile phones and tablets is not compatible.
The first thing we will have to do is export both documents to the Google application or paste the text into two different documents. With the text editor open in one of the documents, we will click on the Toolbar and then on Compare documents.
Now we will only have to select the document with which we want to make the comparison. What Google will do is analyze the text of the two documents to show us a list with all the similarities. In this sense, the application is very similar to the rest of the anti-plagiarism that we have seen throughout the article, although it will only be limited to showing us the resemblance between two documents in local.
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