临床试验数据库
Search the database of privately and publicly funded clinical studies in US and around the world: ClinicalTrials.gov is a centralized registry
资源
图书馆、数据库、存储库、分类广告
PubMed 中央医学图书馆
Search the 10.4+ million full-text medical archives of the National Library of Medicine: PubMed Central (PMC) is a digital repository
访问结构、CCDC 和 FIZ 卡尔斯鲁厄晶体数据库
World biggest cristal structures repository. For each organic crystal, get its chemical diagram and an interactive 3D model view of
学术 Torrents 搜索和存储库
Torrent files repository and directory of scientific and educational resources: Academic Torrents is a community-maintained distributed repository that facilitates the scalable
VIAF名称权威记录搜索
虚拟国际权威数据库（VIAF）是一个国际合作项目，它整合了来自50多个国家的名称权威记录。
dblp 计算机科学期刊搜索
最完整的计算机科学期刊和研究论文元搜索：dblp 计算机科学书目是专门的参考资料
Wolfram Alpha 科学参考计算
Provides engineering information and problem solving techniques and maths, all powered by a powerful search engine: WolframAlpha functions as a
OSINT框架（OSINT资源目录）
OSINT框架是一个组织结构良好的OSINT资源目录，它按树状结构进行分类，整合了在线工具、命令行、软件包和相关信息。
免费SVG地图
A lot of free SVG maps of world, countries or regions, ready to be downloaded and used on any website
Matweb 材料属性数据库
By fast the most complete freely accessible material properties database. For metals, plastics, ceramics, and composites, although plastics is where