QuillBot is an AI-powered writing assistant, designed to enhance the writing process for students, professionals, and writers across various fields. It offers a suite of tools aimed at improving clarity, coherence, and correctness in written communication.

The platform's flagship feature is its Paraphrasing Tool, which allows users to rephrase sentences and paragraphs, offering alternative expressions while preserving the original meaning. This tool is particularly useful for avoiding redundancy and enhancing vocabulary. Additionally, QuillBot provides a Grammar Checker that reviews text for grammar, spelling, and punctuation errors, ensuring polished and error-free writing.

The Summarizer feature condenses lengthy texts into concise summaries, enabling users to grasp essential information quickly. For academic and professional documents, the Citation Generator assists in creating accurate citations in various styles, streamlining the research and writing process. QuillBot Flow integrates multiple tools, including paraphrasing, summarizing, grammar checking, and citation generation, into a unified writing platform for a seamless experience.

To enhance accessibility, QuillBot offers browser extensions, such as the QuillBot AI Writing and Grammar Checker for Chrome, allowing users to access its features across various websites and platforms. In August 2021, QuillBot was acquired by Course Hero, expanding its reach and resources to further develop its services. With its comprehensive set of tools, QuillBot aims to make writing effortless and efficient, catering to the diverse needs of its global user base.