QuillBot

QuillBot is an AI-powered writing assistant that helps users write effortlessly and efficiently with a comprehensive suite of tools. The platform serves over 35 million writers worldwide across 180+ countries, offering paraphrasing, grammar checking, AI detection, plagiarism checking, summarization, translation, and more. Founded in 2017 at UIUC, QuillBot has grown from a simple paraphrasing tool to a full creative suite that helps professionals, students, content creators, and English language learners communicate with clarity and confidence.

• Paraphraser rewrites text instantly with multiple modes including Standard, Fluency, Academic, Creative, and custom modes, supporting 23 languages and unlimited paraphrasing for Premium users.
• Grammar Checker fixes grammar and spelling errors while providing advanced writing suggestions, tone insights, and corrections in 6 languages.
• AI Detector identifies AI-generated content to help ensure writing authenticity and originality.
• Plagiarism Checker scans text for plagiarism in 100+ languages with up to 25,000 words per month, helping prevent unintentional plagiarism.
• AI Humanizer transforms AI-generated text to sound more natural and human-like with Basic and Advanced modes.
• Summarizer condenses text quickly, allowing users to create custom summaries of up to 6,000 words with Premium.
• Translator provides instant translation into 40+ languages for seamless multilingual communication.
• Citation Generator creates and formats citations in APA, MLA, Chicago, and other styles for academic writing.
• AI Chat enables brainstorming, writing assistance, and getting answers through conversational AI.
• AI Image Generator creates images from text prompts for visual content needs.
• PDF Tools include ChatPDF, PDF editing, merging, splitting, and conversion capabilities.

To get started, users can sign up for a free account on quillbot.com and access basic features immediately. The platform is available through web browsers, Chrome and Edge extensions, Safari extension, Microsoft Word add-in, and native apps for Windows, macOS, iOS, and Android. Premium users unlock unlimited paraphrasing, advanced grammar recommendations, full AI detection access, plagiarism checking, and additional modes for enhanced writing capabilities.