Academic
Paper search, preprints and reference management — infrastructure for research and writing.
arXivPreprints in physics, math and CS — where AI papers debut.arxiv.org
Semantic ScholarAI-powered paper search with automatic summaries.semanticscholar.org
ResearchGateA research social network where you can request full texts.researchgate.net
JSTORAn archive of humanities and social-science journals, partly free.jstor.org
OverleafOnline collaborative LaTeX — standard for writing papers.overleaf.com
DOAJA directory of open-access journals, all free full-text.doaj.org