Copyleaks 每月有 2,402,494 次造訪,月增率 -14.1%,定價模式為付費、需聯絡報價。Spamdrain 每月有 185,960 次造訪,成長率 +22.6%,定價模式為免費試用、付費。
| 面向/指標 | ![]() | ![]() |
|---|---|---|
| 官方網域 | copyleaks.com | spamdrain.com |
| 定價模式 | 付費、需聯絡報價 | 免費試用、付費 |
| 每月造訪次數 | 240.25萬 (2,402,494) | 18.6萬 (185,960) |
| 月流量變化量 | -39.44萬 (-14.1%) | +3.43萬 (+22.6%) |
| 主要市場與市佔 | 🇺🇸 美國 (53.2%) | 🇺🇸 美國 (67.9%) |
| 每月直接造訪 | 75.85萬 | 15.43萬 |
| 使用者評分 | 4.4 | 4.3 |
| 支援平台 | 網站 | 網站 |

為內容完整性打造的企業級 AI 與抄襲偵測
辨識超過 30 種語言與主流 LLM 的 AI 生成文字,內部英文測試集準確率宣稱超過 99%。
搜尋 60 兆個網站、16,000 多種開放取用期刊與內部資料庫,揪出改寫與隱藏複製。
將偵測延伸至 AI 生成的影片、音訊與圖像,讓團隊能驗證文字以外的內容。
可擴充的 API 與工作流程整合,自動化 LMS、出版工具與企業系統中的內容分析。

為所有信箱攔截垃圾信、釣魚郵件與病毒的反垃圾服務
支援 iPhone、Android、Mac、PC、Office 365 與通用 IMAP/POP 帳號,一個過濾器即可保護讀取同一信箱的所有裝置。
每封新郵件在投遞前都會被分析,可疑寄件人、惡意連結與帶毒附件會被攔下,不會送到你面前。
每次你把郵件標記為垃圾或確認為正常,過濾器都會學習你的偏好,判斷越來越貼近你的需求。
被攔截的郵件不會遺失。你可以開啟 Spamdrain 帳號查看被攔內容,一鍵放行誤判郵件。
專項更強除了抄襲檢查外還包含專家人工校對,但缺乏原生的自動 AI 內容檢測功能。

專項更強Delivers a lightning-fast email productivity suite, but focuses on user speed rather than automated spam defense.
專項更強Delivers a lightning-fast email productivity suite, but focuses on user speed rather than automated spam defense.
專項更強Combines AI detection with built-in text humanization, whereas Copyleaks focuses strictly on rigorous integrity verification.
專項更強Combines AI detection with built-in text humanization, whereas Copyleaks focuses strictly on rigorous integrity verification.
提供強大的 AI 檢測與抄襲檢查結合功能,但缺乏 Copyleaks 豐富的企業級 API 生態系。
提供多語言文字的詳細句級分析,但缺乏 Copyleaks 廣泛的企業功能。
提供可靠的多模態內容掃描,但企業級整合功能比 Copyleaks 少。

專項更強Offers cross-platform email management with built-in AI writing tools without dedicated spam-filtering capabilities.
專項更強Offers cross-platform email management with built-in AI writing tools without dedicated spam-filtering capabilities.
為學校、大學與團隊打造的準確抄襲與 AI 偵測

專項更強Features a privacy-first email client with AI assistance, lacking Spamdrain's dedicated inbound spam protection.

Quetext is an online writing-integrity platform built around its DeepSearch™ engine, combining a plagiarism checker, AI content detector, grammar checker, summarizer, humanizer, citation generator and paraphrasing assistant in one dashboard. It is used by students, teachers, copywriters and content teams to confirm that a piece of writing is original, human-written and properly sourced before it is submitted or published.
Quetext is an online writing-integrity platform built around its DeepSearch™ engine, combining a plagiarism checker, AI content detector, grammar checker, summarizer, humanizer, citation generator and paraphrasing assistant in one dashboard. It is used by students, teachers, copywriters and content teams to confirm that a piece of writing is original, human-written and properly sourced before it is submitted or published.