ASReview vs LitMap

ASReview is a free, open-source tool that uses AI-aided active learning to prioritize records for systematic review screening, with a human making screening decisions. Its site says the approach can reduce screening workload by up to 95%. Users can simulate AI-aided review to compare models, while Crowdscreen supports parallel screening with access managed by administrators through a private login system. The described model families are ELAS-Ultra, ELAS-Heavy, and language-agnostic ELAS-L; ELAS-Heavy and ELAS-L require the Dory package. ASReview works with reference managers including EndNote and PubMed, and imports and exports CSV, RIS, and XLSX files. Documentation includes a Python API, while the institutional workflow also describes a REST API and CLI for automation. In a local setup, data stays on the user's computer; server deployments keep it in the organization's environment and follow its policies. Support includes documentation, tutorials, videos, community discussion, and organizational workshops and consultancy. ASReview LAB costs nothing with no licensing fees or subscriptions, though running hardware or a server may incur costs.

LitMap is a web tool for analyzing papers and organizing a literature review. Users upload PDFs, and the service extracts claims, methods, and findings. AI extraction can also identify definitions and limitations, with editable results. Papers are clustered by semantic similarity on a visual canvas that users can rearrange. LitMap highlights disagreements with side-by-side quotations and lets users mark them resolved or unresolved. Its gap finder identifies missing populations, methods, or timeframes. Users can arrange papers and themes into an outline, then export organized notes with citations as Markdown, CSV, or JSON. LitMap does not write literature-review prose or paraphrase sources. The site says it works offline, keeps data in the browser, and requires no account. It is labeled beta. The Free plan costs nothing and allows five projects with 50 papers per project; Student costs €5 a month, and Academic costs €25 a month.