Checks for free PDFs from Google Scholar, Sci-Hub, LibGen, Anna's Archive, Sci-net, Semantic Scholar, Unpaywall, OpenAlex, Openrxiv (medRxiv/bioRxiv), and ArXiv. When hovering a DOI, it also displays journal name, ISSN, publisher, metrics (SJR, H-Index, JIF, CiteScore), citation count, and integrity status (PubPeer, Retraction Database, Beall's Predatory List).
过滤：最近 30 日 最近 365 日
| 日期 | 安装次数 | 更新检查总次数 |
|---|---|---|
| 2025-10-21 | 0 | 7 |
| 2025-10-22 | 0 | 6 |
| 2025-10-23 | 2 | 5 |
| 2025-10-24 | 0 | 6 |
| 2025-10-25 | 1 | 5 |
| 2025-10-26 | 0 | 7 |
| 2025-10-27 | 0 | 7 |
| 2025-10-28 | 2 | 9 |
| 2025-10-29 | 0 | 9 |
| 2025-10-30 | 1 | 8 |
| 2025-10-31 | 0 | 8 |
| 2025-11-01 | 0 | 14 |
| 2025-11-02 | 2 | 14 |
| 2025-11-03 | 0 | 13 |
| 2025-11-04 | 0 | 13 |
| 2025-11-05 | 0 | 8 |
| 2025-11-06 | 0 | 9 |
| 2025-11-07 | 0 | 11 |
| 2025-11-08 | 0 | 9 |
| 2025-11-09 | 0 | 15 |
| 2025-11-10 | 0 | 8 |
| 2025-11-11 | 0 | 12 |
| 2025-11-12 | 0 | 13 |
| 2025-11-13 | 0 | 15 |
| 2025-11-14 | 0 | 14 |
| 2025-11-15 | 0 | 12 |
| 2025-11-16 | 0 | 9 |
| 2025-11-17 | 0 | 8 |
| 2025-11-18 | 0 | 12 |
| 2025-11-19 | 0 | 2 |
