
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
ForthWrite records 5,722 monthly visits with +4.6% month-over-month growth and Freemium, Free Trial, Contact for Pricing pricing. QuillBot Paraphraser records 36,630,337 monthly visits with +2.3% growth and Freemium pricing.

AI email drafting that writes in your own voice, inside Gmail and Outlook
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | forthwrite.ai | quillbot.com |
| Pricing Model | Freemium, Free Trial, Contact for Pricing | Freemium |
| Monthly Visits | 5.72K (5,722) | 36.63M (36,630,337) |
| MoM Traffic Delta | +252 (+4.6%) | +824.67K (+2.3%) |
| Primary Market & Share | 🇺🇸 United States (82.4%) | 🇺🇸 United States (25.1%) |
| Direct Visits / mo | 2.25K | 10.99M |
| User Rating | 4.2 | 4.5 |
| Supported Platforms | Website | Website |

AI email drafting that writes in your own voice, inside Gmail and Outlook
ForthWrite reads emails you have already sent to build a voice profile, then refreshes it roughly every 50 captured emails so drafts keep tracking how your writing evolves.
Pro users can have replies waiting when they open Gmail, and clear dozens of threads in parallel instead of writing each one by hand.
Drafts adapt tone to the person you are replying to and treat follow-ups, intros, and status updates as genuinely different jobs rather than one generic template.
Version control and A/B test your prompts, then track acceptance rate, voice match, and intent mix on a measurable improvement curve.
Paraphrase, proofread and summarize text with an AI writing workspace
Rewrite sentences and paragraphs in modes like Standard, Fluency, Formal, Simple, Creative and Shorten/Expand to match tone and length.
Scan your text for grammar, spelling, punctuation and clarity issues and apply suggested fixes.
Condense long documents or articles into key points, with adjustable length.
Generate citations in APA, MLA, Chicago and other styles from a URL, title or DOI.

OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.

Provides industry-leading real-time grammar checking and style suggestions, but offers less versatile sentence paraphrasing than QuillBot.
Provides industry-leading real-time grammar checking and style suggestions, but offers less versatile sentence paraphrasing than QuillBot.

SpecialistExcels at academic citation generation and professional proofreading, but lacks QuillBot's quick interactive paraphrasing slider.
SpecialistExcels at academic citation generation and professional proofreading, but lacks QuillBot's quick interactive paraphrasing slider.
SpecialistSpecializes in humanizing AI-generated text to bypass detection, but offers less traditional rewriting flexibility than QuillBot.
SpecialistSpecializes in humanizing AI-generated text to bypass detection, but offers less traditional rewriting flexibility than QuillBot.
SpecialistHighlights readability issues and complex sentences to improve clarity, but does not automatically rewrite text like QuillBot.
SpecialistHighlights readability issues and complex sentences to improve clarity, but does not automatically rewrite text like QuillBot.

AI agents and brand-governed content for enterprise marketing teams
AI agents and brand-governed content for enterprise marketing teams

Offers excellent sentence-level rewording and tone adjustments, but lacks QuillBot's dedicated multi-mode paraphrasing and citation tools.
Offers excellent sentence-level rewording and tone adjustments, but lacks QuillBot's dedicated multi-mode paraphrasing and citation tools.

SpecialistFocuses heavily on academic integrity with robust plagiarism detection, but offers simpler text rewriting than QuillBot.
SpecialistFocuses heavily on academic integrity with robust plagiarism detection, but offers simpler text rewriting than QuillBot.

AI writing assistant with autocomplete, research, and a Chrome extension
AI writing assistant with autocomplete, research, and a Chrome extension
Combines multilingual paraphrasing with built-in plagiarism detection and AI humanization, but has a less polished user interface.
Combines multilingual paraphrasing with built-in plagiarism detection and AI humanization, but has a less polished user interface.