QuillBot is an AI-powered writing and research platform that helps users refine their writing by providing paraphrasing tools, grammar checks, and summarization. Its primary market is academia, including students, researchers, and educators, but it also serves professionals across various industries. Ownership details are typically private, but it was founded by a team including Rohit Gupta, Anil Jason, and David Silin. Its products aim to enhance writing efficiency and quality.