GS Google Scholar Search engine for scholarly literature across many disciplines. Research & Education•Free ▲0
Z Zotero Open-source reference manager for collecting, citing and organizing research. Research & Education•Free / paid storage ▲0
M Mendeley Reference management and academic reading tools for researchers. Research & Education•Free ▲0
R ResearchRabbit Visual literature discovery through papers, authors and citation networks. Research & Education•Free ▲0
C Consensus AI search engine focused on findings from scientific research. Research & Education•Free / paid plans ▲0
S Semrush Digital marketing suite spanning SEO, competitors, content and advertising. Marketing & SEO•Free / paid plans ▲0
GT Google Trends Explore relative Google search interest across topics, places and time. Marketing & SEO•Free ▲0
P Perplexity AI answer engine built around web research and cited sources. AI & Writing•Free / paid plans ▲0