PaperRater

I really like a good variety of options which anybody can use for free. For instance, I can choose the education level, the type of paper, the speed of plagiarism detection tool (slow or quick analysis).
As soon as the text is checked up, I can have a look at the details of my wordings. There are several levels of text analysis: Plagiarism Detection, Spelling, Grammar, Word Choice, Style (Usage of Transitional Phrases, Sentence Length Info, Readability Indices, Passive Voice, Sentence Beginnings), besides there are additional filters such as: Vocabulary Words (Usage of Academic Vocabulary), Grade, E-Submission (Send These Results to Your Teacher). What's more, there is even such a splendid function as a printable summary report (you can print out the results which the service provides you with). Some functions are paid, for instance you can dig more into plagiarism (Upgrade to premium to see which phrases were found to be un-original) or Readability Indices (This feature is only available to premium subscribers),
The system provides any user with free tips of advice, some helpful resources: Effective Use of Sentence Length, Active vs Passive Voice, Sentence Beginnings. Additionally, the system offers to use some other options, such as: Vocabulary Builder, Writer's Block, Effective Outlines, Writing a Strong Essay
General Grammar Tips. It is a reliable, trustworthy, affordable, useful, user-friendly, effective, efficient and effortless tool.

Well, I don't know why, but for some weird reason the button to start checking up in many of my browsers is frequently replaced by the button leading to other grammar/spelling checking systems. Even on Windows OS (I am using Linux now, by the way), it was a bit a challenging task to use the tool because I could not easily find out where to click on. The button to use the system is usually replaced by some other spelling checking tools (their advertisements) and sometimes I even had to use the other tools. What's more, this nasty situation has been only for last 5-6 years. For instance, 10-11 years ago, when there are not so many grammar and spelling checkers, and when Google Ads were not so omnipresent, I could use the tool easily. I think it is some evil job of rival companies or Google AdSense, but this thing is really displeasing. PaperRater as a text verifying system was created years ago, and it is sad that it is almost chopped off by some startups.

Paper Rate - Your interesting content has a high rate of originality while being creative. Reporting & Statistics, Document Review, and Plagiarism Detection are the most useful.

Paper Rate - You add a style feature to the list of Capterra that I used in the software. Moreover, suggestions for incorrect words make it harder to see useful data.