QuillBot

QuillBot rewrites text across multiple modes — Standard, Fluency, Formal, Creative — giving writers control over how aggressively the AI changes their prose, alongside grammar checking, summarizing, and citation generation. Students and ESL writers use it heavily to adapt tone and avoid repetition, though it's also become one of the go-to tools students use to paraphrase around AI-detection checks, which is worth knowing given how often it comes up on the other side of that arms race.