專項更強Anthropic 的前沿 AI 工作空間,由 Claude 5.5 驅動,擅長代理式程式開發、分析與細膩寫作。
ChatPDF 每月有 1,044,477 次造訪,月增率 -3.7%,定價模式為免費增值。Citely 每月有 62,271 次造訪,成長率 -6.1%,定價模式為免費增值。

Citely is an academic citation tool that checks whether the references in a paper actually exist and point to the right work. You paste a reference list or a claim, and Citely cross-checks it against large scholarly indexes such as CrossRef, PubMed, arXiv, and OpenAlex, flagging fabricated DOIs, mismatched titles, and the hallucination patterns typical of AI-written references. It also works in reverse as a source finder: give it a claim and it returns real, citable papers with verified metadata in APA, MLA, or Chicago format.
| 面向/指標 | ![]() | |
|---|---|---|
| 官方網域 | chatpdf.com | citely.ai |
| 定價模式 | 免費增值 | 免費增值 |
| 每月造訪次數 | 104.45萬 (1,044,477) | 6.23萬 (62,271) |
| 月流量變化量 | -4.05萬 (-3.7%) | -4056 (-6.1%) |
| 主要市場與市佔 | 🇺🇸 美國 (9.6%) | 🇺🇸 美國 (25.9%) |
| 每月直接造訪 | 45.78萬 | 9641 |
| 使用者評分 | 4.2 | 4.2 |
| 支援平台 | 網站 | 網站 |
與任何 PDF、影片或網頁對話,幾秒內取得附引用的答案
每則回答都錨定來源文件,附可點擊引用並自動捲動至特定段落,核對只要幾秒,不必逐頁翻找。
將文件歸入資料夾,在同一個對話中查詢多個檔案,方便比較論點、交互核對結論或一次複習整門課程。
把冗長的論文、報告與合約濃縮成重點,也支援以任何語言翻譯或提問——甚至可用一種語言上傳、另一種語言提問。
依素材自動產生單字卡與簡報,並使用內建 AI 寫作與 AI 偵測功能來起草與檢查學術文本。

Citely is an academic citation tool that checks whether the references in a paper actually exist and point to the right work. You paste a reference list or a claim, and Citely cross-checks it against large scholarly indexes such as CrossRef, PubMed, arXiv, and OpenAlex, flagging fabricated DOIs, mismatched titles, and the hallucination patterns typical of AI-written references. It also works in reverse as a source finder: give it a claim and it returns real, citable papers with verified metadata in APA, MLA, or Chicago format.
Paste a claim or paragraph and Citely returns matching academic papers with verified metadata, ready to cite in APA, MLA, or Chicago style.
Submit a reference list and Citely tests each entry against scholarly databases, marking entries that cannot be confirmed or that point to the wrong work.
Citely targets the specific errors AI models make when inventing references, including chimera citations, invented DOIs, and citations that drift across years.
Checks run against CrossRef, PubMed, arXiv, and OpenAlex, so verification reflects real indexed scholarship rather than a single narrow database.
專項更強Anthropic 的前沿 AI 工作空間,由 Claude 5.5 驅動,擅長代理式程式開發、分析與細膩寫作。
結合同儕級學術校對、抄襲比對與 AI 寫作工具
免費 / 開源Completely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms.
跨裝置的免費 AI PDF 編輯、轉換與閱讀工具
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.
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.

Combines full desktop PDF editing software with AI chat, but requires software installation for full features.
自帶真實文獻與自動引文的 AI 學術寫作工具
具備強大的多格式文件聊天與填表功能,但介面感覺稍微凌亂了一點。