ReadCube Papers vs Zotero

ReadCube Papers brings scientific literature discovery, reading, organization, and citation into a platform for individual researchers and teams. Its research answers draw on 165M+ publications and 182M+ patents. Readers can annotate PDFs with highlights, underlines, drawings, notes, and sticky comments. The AI assistant answers questions about a library and compares up to 20 papers, but is available only in the web version. Saved searches can add new papers to a library and send daily, weekly, or monthly alerts. For systematic reviews, it supports dual-reviewer screening, custom data-extraction forms, AI autofill, and PRISMA exports. A browser extension imports articles from Dimensions, PubMed, Google Scholar, and journal websites, with associated PDFs when possible. ReadCube can connect to Overleaf, and enterprise workflows can link libraries with systems including Veeva Vault, SharePoint, and Salesforce. It runs on Android, iOS, Mac, Windows, and the web, with an API and browser extension. Essentials costs $10 a month; Plus costs $20 a month per user. Both have a 30-day trial, and there is no free plan.

Zotero is an open-source tool for collecting, organizing, annotating, citing and sharing research. Its browser Connector can identify research items during browsing and save them to a library. Collections, keyword tags and saved searches help organize material, while a PDF reader and note editor support working with documents. Zotero supports over 9,000 citation styles and integrates with Microsoft Word, LibreOffice and Google Docs. The desktop app stores research locally by default; syncing is optional. Zotero Storage can sync PDFs, images, web snapshots and other files across devices, with access through an online library. Libraries can be shared with any number of people at no cost, and groups support shared collections. The free plan includes 300 MB of storage; paid storage starts at $20/year for 2 GB. Zotero says synced data is encrypted in transit and newly created accounts' data is encrypted at rest with AES-256. The data server is in the United States. The data server software can be run locally, though Zotero says self-hosting is technically challenging and unsupported. Most support takes place in public forums.