Grammarly 每月有 58,867,412 次造訪，月增率 -1.5%，定價模式為免費增值。WriteGO 每月有 5,264 次造訪，成長率 +118.4%，定價模式為付費。
提供即時文法糾錯、語氣校準、寫作來源追蹤與團隊風格指南的跨平台 AI 寫作助理。
| 面向／指標 | |  |
|---|---|---|
| 官方網域 | grammarly.com | writego.ai |
| 定價模式 | 免費增值 | 付費 |
| 每月造訪次數 | 5886.74萬 (58,867,412) | 5264 (5,264) |
| 月流量變化量 | -91.61萬 (-1.5%) | +2854 (+118.4%) |
| 主要市場與市佔 | 🇺🇸 美國 (51.9%) | 🇺🇸 美國 (56.9%) |
| 每月直接造訪 | 2539.87萬 | 2108 |
| 使用者評分 | 4.4 | 4 |
| 支援平台 | 網站 | 網站 |
提供即時文法糾錯、語氣校準、寫作來源追蹤與團隊風格指南的跨平台 AI 寫作助理。
在 Chrome、Safari、Firefox、Edge、Windows、Mac、Google Docs、MS Office 與行動鍵盤中原生運行，標出文法錯誤、重寫繞口句子，並將語氣轉向自信、共情或高階主管口吻。
部署具上下文感知的 AI 代理，預測目標受眾會如何反應草稿、定位可信的支撐引文、依評分規準批改文章，並在 Pro 方案下每月使用最多 2,000 次提示生成草稿。
對照數十億網頁與學術資料庫掃描文字以找出無意抄襲，識別 AI 生成的段落，並透過 Google Docs 與 Word 中的 Authorship 報告透明記錄文件來源。
讓 Pro 與 Enterprise 方案的團隊能夠固化公司術語、禁用過時行話、強制使用包容性語言、插入共享片段，並在行內顯示公司內部定義。
從附頁碼引用的資料出發展稿，並審查文件的學術誠信
ChatPDF 工具依據檢索到的原文片段回答論文問題，並逐字校驗引用，讓回答始終對應到具體頁面。
把已確認的大綱與選定證據變成草稿，可續寫的工作空間讓引文一路傳遞，而不會盲目貼上。
每條結論都必須逐字引用你的文件，摘錄找不到即被丟棄，因此每個標記都能被你實際核查。
AI Detector 提供可檢視的審查訊號，而非單一黑箱百分比，並定位為輔助證據。
專項更強Outstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
免費 / 開源QuillBot is an AI writing suite best known for its paraphrasing tool. Users paste or type text and have it rewritten in different tones and styles, while companion tools handle grammar checking, summarizing, citations, plagiarism checks and AI content detection. It is widely used by students, writers and professionals.
免費 / 開源QuillBot is an AI writing suite best known for its paraphrasing tool. Users paste or type text and have it rewritten in different tones and styles, while companion tools handle grammar checking, summarizing, citations, plagiarism checks and AI content detection. It is widely used by students, writers and professionals.
免費 / 開源結合同儕級學術校對、抄襲比對與 AI 寫作工具
提供強大的跨應用程式多語言文法與風格檢查，但進階生成式 AI 功能較少。
提供更深入的文稿分析與結構報告，但學習曲線比 Grammarly 陡峭。
免費 / 開源Jenni is an AI research and academic writing workspace that helps students, researchers, and academics read, write, and cite in one place. Bring in PDFs or import a Zotero or Mendeley library, and Jenni's autocomplete suggests sentences grounded in your own sources, with every suggestion linked to the exact page and paragraph. A built-in writer, AI chat, citation engine covering 10,000+ styles, and a Reviews tool for catching weak or unverified claims make it a full environment for producing cited papers.
免費 / 開源Jenni is an AI research and academic writing workspace that helps students, researchers, and academics read, write, and cite in one place. Bring in PDFs or import a Zotero or Mendeley library, and Jenni's autocomplete suggests sentences grounded in your own sources, with every suggestion linked to the exact page and paragraph. A built-in writer, AI chat, citation engine covering 10,000+ styles, and a Reviews tool for catching weak or unverified claims make it a full environment for producing cited papers.
免費 / 開源一個 AI 工作台，完成寫作、編輯、偵測與人性化
專項更強Paperpal is an AI writing assistant built for researchers, academics, and students. It proofreads and rewrites academic prose in real time, suggests citations, checks references, and reads PDFs — all from inside Microsoft Word, Google Docs, Overleaf, the Chrome extension, or the web editor.
專項更強Paperpal is an AI writing assistant built for researchers, academics, and students. It proofreads and rewrites academic prose in real time, suggests citations, checks references, and reads PDFs — all from inside Microsoft Word, Google Docs, Overleaf, the Chrome extension, or the web editor.
專項更強能視覺化突顯可讀性與句子複雜度，但缺乏自動語法修正和全瀏覽器擴充功能支援。
專項更強能視覺化突顯可讀性與句子複雜度，但缺乏自動語法修正和全瀏覽器擴充功能支援。
非常適合句子層級的語氣調整與重寫，但在獨立的文法規則與風格指南方面較不全面。
免費 / 開源自帶真實文獻與自動引文的 AI 學術寫作工具
具備自動補全、研究與 Chrome 擴充功能的 AI 寫作助手
