Checkstep 每月有 14,587 次造訪，月增率 -21.5%，定價模式為免費試用、需聯絡報價。Grammarly 每月有 58,867,412 次造訪，成長率 -1.5%，定價模式為免費增值。
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 | checkstep.com | grammarly.com |
| 定價模式 | 免費試用、需聯絡報價 | 免費增值 |
| 每月造訪次數 | 1.46萬 (14,587) | 5886.74萬 (58,867,412) |
| 月流量變化量 | -4005 (-21.5%) |
| -91.61萬 (-1.5%) |
| 主要市場與市佔 | 🇺🇸 美國 (45.8%) | 🇺🇸 美國 (51.9%) |
|---|
| 每月直接造訪 | 5712 | 2539.87萬 |
|---|
| 使用者評分 | 4.3 | 4.4 |
|---|
| 支援平台 | 網站 | 網站 |
|---|
面向信任與安全團隊的 AI 內容審核平台
在單一整合平台上，以 100 多種語言掃描並審核文字、圖片、影片與音訊。
針對所有主要違規類型自訂規則，再由工作流與自動化層一致執行。
接入主流審核模型，測試哪款契合政策，並無縫更換供應商而無須重建流程。
將 ModBot 自動篩選與專家複核結合，讓團隊專注於最關鍵的案例。
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。
專項更強Outstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker.
#1擅長大量改寫與重寫文字，但在所有應用程式中提供流暢的行內即時校對功能較少。
ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.
GPTZero is an AI detection platform for identifying machine-generated text. It combines a text detector with a Chrome extension, a plagiarism checker, writing-process verification, and educator-focused classroom tools.
Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authenticity tools in a single dashboard.
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。
Winston AI is an AI content detection suite that identifies text and images produced by generators like ChatGPT, Gemini, and Claude. Alongside its detector it offers plagiarism checking, an AI image and deepfake detector, writing feedback, and an API for embedding detection into other platforms.
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。
Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authenticity tools in a single dashboard.
一次掃描完成 AI 偵測、抄襲比對與內容品質評估
提供更深入的文稿分析與結構報告，但學習曲線比 Grammarly 陡峭。
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。
Winston AI is an AI content detection suite that identifies text and images produced by generators like ChatGPT, Gemini, and Claude. Alongside its detector it offers plagiarism checking, an AI image and deepfake detector, writing feedback, and an API for embedding detection into other platforms.
