Capacities vs Heptabase for Research Workflows

Capacities ($9.90/month) and Heptabase ($11.99/month) are both visual PKM tools aimed at researchers. Capacities uses a card/object-based system. Heptabase uses a whiteboard-centered approach. Both are designed for knowledge workers who think visually.

Capacities

Capacities organizes knowledge as "objects" — Notes, People, Books, Projects, Tags. Each object type has its own view and can reference other objects. Best for: researchers who want structured object-based organization (tracking books you read, people you meet, projects you work on) with wiki-style linking.

Interface: clean, modern. Available on Mac, Windows, iOS (mobile companion). Monthly notes feature for daily writing.

Heptabase

Heptabase organizes notes on infinite whiteboards. Cards are notes that you can arrange spatially to see connections. Best for: researchers and students who think in spatial relationships — thesis outlines, literature reviews, project maps.

Key differentiator: the whiteboard view. You can arrange cards representing different papers or ideas spatially to build visual maps of knowledge.

Comparison for Academic Research

For literature review and idea mapping: Heptabase whiteboard is superior for visual thinkers.

For structured note organization with object relationships: Capacities handles "Person says X about Y" relationships better.

Both use cloud sync. Neither offers on-device AI. Both require deliberate daily maintenance.

Where Nemos Fits

Nemos is not in the same category — it is capture-first, not deliberate PKM. For researchers: use Nemos for the capture layer (voice memos during fieldwork, screenshots of papers, article clips) and Capacities or Heptabase for the structured knowledge layer. Both tools are complementary.

Comparing Object-Based and Card-Based Thinking

Capacities structures knowledge as typed objects: People, Books, Projects, with defined relationships between them. This mirrors how databases think. Good for researchers who want structured, filterable knowledge — "show me all books by people in my network."

Heptabase uses cards on an infinite whiteboard. Spatial arrangement is the primary organization primitive. Good for visual thinkers working through complex problems — arrange evidence spatially, group hypotheses visually, see relationships that don't fit hierarchies.

Both have weak mobile capture. iPhone is an afterthought in both apps. The same solution applies: Nemos on iPhone for mobile capture, Capacities or Heptabase on Mac for structured research work. The capture layer is separate from the thinking layer in practice for most serious researchers.