Pubmed Live Searches - up to date searches on a range of COVID-19 topics.
Oxford COVID-19 Evidence Service - Rapid Reviews
TripPRO - high-quality research evidence
LitCovid (PubMed) - categorized by research topic and location
COVID19 Primer - understand the scientific progress in the COVID-19 fight
Cochrane Library - evidence relevant to critical care
Google Scholar - COVID-19 research articles
Coronavirus COVID-19 - Research Data & Web Resources