维基百科多年生植物资源列表 (WP:RSP)
The Wikipedia Perennial Sources page is a dynamic index that documents community consensus on the reliability of frequently cited news
搜索
Search engines and search tools, from the most famous ones to very specialized. Note that standards and regulations search have their dedicated “Standards” category and therefore not included here.
问题纸张筛选器（PPS）
The Problematic Paper Screener (PPS) tool runs automated “fingerprint-queries” against the Dimensions.ai academic search engine, hunting for textual or structural
雅培航空航天技术图书馆
Abbott Aerospace 技术库提供了一个集中式存储库，其中包含超过 17,000 份航空航天结构技术文档和计算工具。
洋葱搜索引擎
Onion Search Engine is a discovery tool designed to index and retrieve content from the Tor network, specifically targeting .onion
i2p 搜索
i2psearch.com 是一个专门的搜索引擎和目录，旨在索引和发现 I2P（无形互联网项目）中的 “电子网站”。
Onion.live 暗网搜索
Onion.live是Tor网络的一个专门搜索引擎和目录，它提供了一个 “已验证”（编辑器）的集中存储库。
Openverse 免费图片搜索
Openverse is an open-source search engine that aggregates over 700 million Creative Commons-licensed and public domain media files, including images
FDA橙皮书：已批准的药品
美国食品药品监督管理局（FDA）的《橙皮书》（正式名称为《具有治疗等效性评价的已批准药品》）是权威的监管数据库。
Europeana 图片和档案搜索
Europeana aggregates and provides access to over 50 million digitized items from more than 3,500 European cultural heritage institutions. The
互联网档案馆：时光机
Search over 580+ billions pages … the current version and many of the previous versions over the years. Free to