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Tool
Category
Pricing
Free?
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Zotero ✓
Free open-source reference manager with browser extension, annotations, and Word integration.
Best for: reference-manager
Label Studio
Open-source multi-format data labeling platform for ML with configurable interfaces.
Best for: annotation
Lateral
AI document analysis tool for finding themes and comparing concepts across research sources.
Best for: document-analysis
PDF.ai
AI PDF tool for chatting, data extraction, and summarization with source highlights.
Best for: PDF
Inciteful
Free citation network analysis tool for rapid literature review and paper discovery.
Best for: research