QuillBot

Writing and Content - Pricing: freemium - Editor rating: 3.5/5 - https://quillbot.com

An AI paraphrasing and writing toolkit - rewrite sentences, summarize texts, and check grammar, popular with students.

QuillBot's core tool rewrites text in different tones - simpler, more formal, more fluent - which made it hugely popular with students and non-native English writers. Around it sit a summarizer, grammar checker, plagiarism checker, and translator. It is best for polishing and reshaping existing text rather than generating from scratch. The free tier covers light use, with modes and length limits unlocked on Premium.