Dupli Checker (or just duplichecker.com) is a free plagiarism checker (supported by the site's ads) and SEO check (e.g. keyword density, etc.) tool suite.
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SurferSEO
Score 9.4 out of 10
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SurferSEO, from Polish company Surfer, is presented as a modern tool for SEOs and marketers for efficient and comprehensive on-page SEO optimization.
I have used Dupli Checker for much online work for my organization. Dupli Checker is an easy way to get the written content on your website checked for plagiarism. If you have a blog, then this is something that you need to have installed on your website. This product is all about helping you in making sure that your content remains original and fresh.
SurferSEO is excellent if you want to optimize your SEO content using AI to find the right word count, keyword frequency, FAQs, and headings to use in your content. It also has a great audit feature to analyze existing content and identify any areas of improvement to be made. For keyword research and AI writing, it still isn't as feature-rich as other software, but the developers are constantly upgrading and adding new features - over time I am confident that SurferSEO will become the only SEO software that anyone needs.
Have a pricing option that is based on the number of content editors and audits that don't expire - as well as monthly/yearly subscription options.
The keyword research tool - isn't as advanced as SEMRush or Ahrefs, and I am not completely confident with the keyword difficulty score for each keyword.
The AI writing assistant isn't as good as other options such as Jasper - although it has just received a major update (which I haven't used yet).
My school uses Google Classroom which has a plagiarism checker, but only allows you to use it on 5 assignments per class - this is very small! Dupli Checker is unlimited so I can use it for all of my student's assignments. I have learned it’s not as accurate and in-depth as Google, but it is free and convenient!
Frase gives a lot of content to use, but it doesn't give you the factors you need to rank. This is ultimately why we use SurferSEO over any other editor tool that is out there. The analytics are number one to the entire space.
Although a paid version is needed to convert more than 20,000 words, this platform is worth paying for, because it helps you create authentic text without grammatical errors.
Helps our organization to avoid that any important document that has to be shared with another organization, contains plagiarism.
The best of all is that it has first-rate technology and excellent security.
It has an impressive color-coding scheme, so you can identify which are the duplicates and the unique ones.