Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines.
Dimensions.ai re-imagines discovery and access to research: grants, publications, citations, clinical trials, and patents in one place.
Lens.org is the world’s largest open and free data platform of hundreds of millions of global patents and scholarly articles in a form that anyone can use to navigate the complex world of innovation.
Publish or Perish (PoP) is a software program that is freely available to anyone with an Internet connection. It uses 7 data sources: Google Scholar, Google Profile, Crossref, Microsoft Academic, Scopus, PubMed, and Web of Science data.
For systematic review – ASReview is open-source software that leverages a machine learning technique called “active learning” to help you screen hundreds of articles for their relevance to your topic.
SnowGlobe is a program that assists with literature searching, using a technique called snowballing. Snowballing has emerged as the gold standard for comprehensive literature reviews. The process of snowballing takes all known relevant papers and searches through their references (which papers they cite) and citations (which papers cite them).
Literature Mapping Tools
A new simple tool that will help you find papers similar to a particular work that you specify, and then present their connection in a visual graph. All you need is to input one relevant ‘seed’ paper.
ResearchRabbit is a new 2020 literature mapping tool that can help you find related papers based on references, citations, co-authors, and other linkages.
Litmaps help you find relevant papers and visualize their connection in a network graph, to see how the research topics fit together.
Inciteful is a literature mapping tool that could help you find similar papers based on a set of papers of your choice. You can also enter two papers and look at all the papers that link those two papers together.
Open Knowledge Maps, or OKMaps, use key research terms to quickly assess over 28 million articles and identify central themes and common research findings.