排序
美国国家环境出版物 U.S. Environmental Protection Agency
美国环境保护署提供出版物搜索、预览和下载等服务 Website of the U.S. Environmental Protection Agency (EPA). EPA's mission is to protect human health and the environment.
DOAJ Directory of Open Access Journals
开放存取期刊的索引平台，提供高质量、同行评议期刊 DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality content is freely available online for everyone.
bioRxiv.org bioRxiv.org
为生物学家专有的预印本文献库 bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
arxiv国内镜像 Fastly error: unknown domain cn.arxiv.org
Fastly error: unknown domain cn.arxiv.org
OSF Preprints OSF
自有预印本库，集成多家数据，超200万个搜索结果 OSF
NASA 技术报告库 NASA Technical Reports Server (NTRS)
NASA Technical Reports Server (NTRS) NASA Technical Reports Server (NTRS)
中科院科技论文预发布平台 ChinaXiv.org 中国科学院科技论文预发布平台
ChinaXiv.org 中国科学院科技论文预发布平台 ChinaXiv.org 中国科学院科技论文预发布平台
PLOS Home
PLOS出版8种生命科学与医学领域的开放存取期刊 Home - PLOS
SCIRP(科研出版社) SCIRP Open Access
国外注册，国内运作，240多种开放存取、在线、同行评审、多学科的期刊、会议论文和书籍 Scientific Research Publishing is an academic publisher with more than 200 open access journal in the areas of science, technology and medicine. It also publishes academic books and conference proceedings.
CERN 文档服务 CERN Document Server
超过65万篇物理学及相关学科的论文、预印本等全文 Access articles, reports and multimedia content in HEP
GOOA paperc
开放获取论文一站式发现平台 paperc