Inciteful vs Litmaps

Inciteful is a free web tool that helps researchers discover academic literature through citation networks. Paper Discovery builds a network around selected papers and surfaces important and similar papers, along with authors and institutions. Results can be filtered by keyword, distance, and year. Literature Connector maps citation paths between two papers in an interactive visualization, supporting interdisciplinary work and entry into unfamiliar research areas. Inciteful says its database covers more than 240 million academic papers and indexes more than 2 billion citations, using sources including OpenAlex, Semantic Scholar, Crossref, and OpenCitations. Researchers can import BibTeX files to seed a graph, provided entries include DOIs, then export results in BibTeX format or to Zotero, Mendeley, or another reference manager. Core tools are free with no stated usage limits. The maker says the codebase is fully open source. Graph Pruning is beta and may not remain supported or become permanent.

Litmaps is a web-based research tool that uses citation networks and advanced search to help researchers find papers and conduct literature reviews. Its search catalogue contains more than 270 million papers. A Litmap visualizes connections among articles through citations and references; users can annotate papers and change how the map is arranged. Topic monitoring sends automatic emails when new articles appear, and maps can be shared as images, public links, or with selected email addresses. The free plan costs nothing and includes basic search, up to 20 inputs and 100 articles, one Litmap, and a monthly summary, but no collaboration. Pro (Education) costs $10 a month, billed $120 / year - save 20%; it adds advanced search, unlimited inputs, articles, and Litmaps, plus daily or configurable alerts, and requires an academic email address. Litmaps Pro syncs Zotero collections with Litmaps Tags in both directions. Articles can also be imported from BibTeX, RIS, or PubMed files and exported in BibTeX, RIS, or CSV formats. Open Access PDFs are available to all users; other PDF access requires institutional access through LibKey.