Can you guys help with plagiarism checker? I am writing SEO texts, so I need to know which one is better for this task.

My college English Professor, Dr. Johnson, was always pretty good at it. Give him a try!

I wonder how the seo bots do come up to this forum.  The blackhat seo do not work anymore nowadays...

You can try to google it or use scan your manuscript instead. It's really good option, so you can use it for SEO works. I prefer to use it for college essays, because it checks everything really cool.

Maybe DJI has a solution for this.
Since it is a DJI forum after all

You can try to edubirdie plagiarism-checker  It's really good option, so you can use it for SEO works.One of my friends recommended me it and I'm pleased with their work very much https://www.facebook.com/edubirdie if you want to more information you can search here.

You can use those programs for duplicate content checking
1.Copyscape Premium
2.Virante Duplicate Content
3.DMCA
4.Content Watch

Of courseyou can use a good plagiarism checker. The variety of them is rich, so firstly clarify for yourself what tool you need: paid or free, with deep analysis or not. Some tools are suggesting the comparison of several documents and the others suggest to the user graphics with all the details. Read this rewiew about best plagiarism checker may be it would help you make the most profitable for you choice. Now it is not a problem to check the text or even whole web-site for plagiarism, so you can easily do it!

Read about best plagiarism checker https://spyserp.com/blog/proverka-unikalnosti-texta. It would help you choose the most suitable one.

As far as I know there is also Turnitin, URKUND and Compilatio plagiarism checkers. One thing they all have in common - they all require paid subscription.
the free plagiarism checkers are usually pretty worthless

I also recently found this plagiarism checker. Looks relatively cheap https://prohighgrades.com/grammar-checker