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2 / 4 Tools
| Attribute | OpenAlex by OurResearch non-profit | Heptabase by Heptabase, Inc. |
|---|---|---|
| Category | Research | Research Subcategory: Visual PKM & Research Canvas |
| Rating & Reviews | ★New / 5.0 0 verified reviews Weighted score: 0.00 | ★New / 5.0 0 verified reviews Weighted score: 0.00 |
| Pricing Model | free | paid |
| Starting Price | Free 100% free open data and open API (CC0 License). | 8.99 Subscription-only with a 7-day free trial. Pricing starts at approximately $8.99/month (annual billing) or $11.99/month (monthly billing). No perpetual free plan. |
| Platforms | WebAPI | macOSWindowsLinuxiOSAndroidWeb |
| AI Capabilities | 250M+ Research Knowledge GraphCitation Network TraversalInstitution & Author DisambiguationOpen Access Link Identification | Semantic card searchVisual mind mappingPDF text annotationLocal-first data management |
| Overview | Free, open catalogue of the world's research system with 250M+ scientific works and citations. | Visual knowledge management workspace that combines nested whiteboards, markdown cards, and PDF annotations for complex research. |
| Tags | open-accesscitationsbibliographicresearch | pkmknowledge-managementwhiteboardresearchmarkdown |
