During my time as a copywriter, I regularly checked my articles for uniqueness, as well as for punctuation and spelling errors. I used three services: Content Watch, text.ru, and Etxt Antiplagiat. This tool allowed me to thoroughly check texts for various errors and uniqueness. Without registration and for free, I could check articles up to 3000 characters long. That was enough for me, as I wrote many short texts. Later, I registered on the site with the intention of selling my articles, but something went wrong, and now I only use it to check for uniqueness.