ChatGPT provides personalized learning based on the prompts inputted by the user. It can be helpful to write in English and other languages as well. 

Quillbot will provide students with edits to help enhance their writing, check for grammar errors and plagiarism, and translate texts. While it is an AI tool to help with writing, Quillbot is not considered AI writing as they don't generate text but helps with editing. 

With being able to choose different bot personas, TextCortex helps with writing, summarzing and paraphrasing texts, and you can save prompts to reuse by changing some dynamic keywords.