QuillBot
Best for paraphrasing and rewritingQuillBot is an AI-powered writing assistant ranked #43 on the a16z Top 100 Gen AI Apps list, specializing in paraphrasing, grammar correction, and text enhancement. The platform's core paraphraser offers seven writing modes—Standard, Fluency, Formal, Simple, Creative, Expand, and Shorten—allowing users to transform text for different audiences and purposes. Beyond paraphrasing, QuillBot provides a comprehensive grammar checker, plagiarism detector, summarizer, citation generator, and translator supporting 45+ languages. The Chrome extension and Microsoft Word integration bring QuillBot's capabilities directly into users' existing workflows. With over 50 million users, QuillBot has become an essential tool for students writing academic papers, professionals crafting business communications, and non-native English speakers improving their writing fluency. The AI understands context and meaning, preserving the original intent while restructuring sentences for clarity, conciseness, or stylistic preferences.
AI Models
Key Features
- Seven paraphrasing modes: Standard, Fluency, Formal, Simple, Creative, Expand, Shorten
- AI grammar checker with contextual suggestions
- Plagiarism detector comparing against billions of sources
- Text summarizer for condensing long documents
- Citation generator supporting APA, MLA, Chicago formats
- Translator supporting 45+ languages
- Chrome extension and Word integration
- Tone detection and adjustment recommendations
Integrations
Pricing
Basic paraphrasing, limited words, 3 modes
All 7 modes, unlimited words, plagiarism checker, advanced grammar
Team management, shared settings, priority support
Pros & Cons
Pros
- Seven paraphrasing modes cover virtually any rewriting need
- 50M+ users validate reliability for academic and professional use
- Browser extension integrates seamlessly into existing writing workflows
Cons
- Free tier limited to basic paraphrasing with word limits
- Plagiarism detection only available on Premium plans