FluentEditor — AI Grammar Checker & Writing Assistant is a strong option, but it is not the right fit for everyone. Below are 10 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
AI grammar checker & writing coach for non-native English speakers. Fix grammar, rewrite emails, adjust tone — on every website.
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| FluentEditor — AI Grammar Checker & Writing Assistant (original) | — | — | Free | AI grammar checker & writing coach for non-native English speakers. Fix grammar, rewrite emails, adjust tone — on every website. |
| Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector | 4.7 | 5M+ | Free | Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more! |
| Google Mail Checker | 4.1 | 2M+ | Free | Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox. |
| HubSpot Sales | — | — | Free | Email tracking, CRM for Gmail, and sales productivity tools in your inbox |
| Compose AI: AI-powered Writing Tool | 4.1 | 300K+ | Freemium | Generate any text using AI. Autocomplete your sentences where you type. |
| SimpleLogin by Proton: Secure Email Aliases | — | — | Free | Easily create a different email for each website to hide your real email. Protect your inbox against spams, phishing, data breaches |
| Voila – AI Assistant, Copilot and AI Writer | 4.7 | 80K+ | Free | Seamless personal AI assistant powered by GPT-5 to help you create, write, summarize, brainstorm, and research on any website. |
| DeepL: translate and write with AI | 4.7 | 4M+ | Free | Translate while you read and write with DeepL Translate, the world’s most accurate translator. |
| Mailtrack | 4.4 | 3M+ | Freemium | Salespeople and recruiters who need to know when an email was actually opened. |
| Apollo.io: Free B2B Phone Number & Email Finder | — | — | Free | Apollo enables users to find contact info, connect with buyers, track emails, and more for free. |
| Email Finder by ContactOut – Email Lookup Tool | 4.4 | 600K+ | Free | Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500. |
Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Covers similar ground in the Email category: Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!
Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox.
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Covers similar ground in the Email category: Displays the number of unread messages in your Google Mail inbox. You can also click the button to open your inbox.
Email tracking, CRM for Gmail, and sales productivity tools in your inbox
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Covers similar ground in the Email category: Email tracking, CRM for Gmail, and sales productivity tools in your inbox
Generate any text using AI. Autocomplete your sentences where you type.
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Covers similar ground in the Email category: Generate any text using AI. Autocomplete your sentences where you type.
Easily create a different email for each website to hide your real email. Protect your inbox against spams, phishing, data breaches
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Covers similar ground in the Email category: Easily create a different email for each website to hide your real email. Protect your inbox against spams, phishing, data breaches
Seamless personal AI assistant powered by GPT-5 to help you create, write, summarize, brainstorm, and research on any website.
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Covers similar ground in the Email category: Seamless personal AI assistant powered by GPT-5 to help you create, write, summarize, brainstorm, and research on any website.
Translate while you read and write with DeepL Translate, the world’s most accurate translator.
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Another popular Email extension: Translate while you read and write with DeepL Translate, the world’s most accurate translator.
Read receipts and link tracking for Gmail.
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Another popular Email extension: Read receipts and link tracking for Gmail.
Apollo enables users to find contact info, connect with buyers, track emails, and more for free.
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Another popular Email extension: Apollo enables users to find contact info, connect with buyers, track emails, and more for free.
Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500.
Why it replaces FluentEditor — AI Grammar Checker & Writing Assistant: Another popular Email extension: Find emails for 75% of Linkedin or ANY website. Save profiles to CRM. Chatgpt comments & email writer. Trusted by 76% of Fortune500.
Direct comparisons with the extensions people weigh against it.
Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector is the closest match. Covers similar ground in the Email category: Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!
Yes — Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector, Google Mail Checker, HubSpot Sales are free.
