As plagiarism is a big issue today proofreading programs often offer you a possibility to analyze the originality of your text.
For your convenience, Grammarly is available online as well as for desktop text editors.
Ginger Ginger performs the role of a proofreading website as it is available only online.
All the smart people know that there is almost no chance to avoid mistakes when you are writing.
It does not mean that you cannot follow the rules and use the right words – it means that even the most educated people have no guarantees they would not make typos or forget to put a comma.