Side-by-side comparison of two listed Productivity tools — real listing data only, no paid placement.
On record, they differ in: unique tags (Obsidian 2: #markdown #knowledge-graph vs Capacities 2: #pkm #objects); category rank (Obsidian #19 vs Capacities not in top 50). Same pricing model (Freemium) and category (Productivity). Listing facts only — not a recommendation.
Private, local-first notes connected into a knowledge graph
Obsidian stores notes as plain Markdown files on your device and links them into a personal knowledge graph, visualized and extensible with thousands of community plugins. Free for personal use, with optional paid sync.
Published 2026-08-06 · Links checked 2026-09-14
Object-based note-taking that organizes itself
Capacities structures notes as typed objects — people, books, meetings, ideas — that interlink automatically into a networked knowledge base with daily notes, calendar context and AI assistance.
Published 2026-08-06 · Links checked 2026-09-16
| Obsidian | Capacities | |
|---|---|---|
| Pricing | Freemium | Freemium |
| Category | Productivity | Productivity |
| Rank in Productivity | Position #19 of 77 | not in top 50 of 77 |
| Alternatives listed | 12 → | 11 → |
| Shared tags | #notes | |
| Unique tags | #markdown #knowledge-graph | #pkm #objects |
| Platforms | iOS · Android · macOS · Windows · Linux · Chrome extension · Firefox add-on | Not detected on official site (checked 2026-09-17) |
| Pricing page | Official pricing page | Official pricing page |
| Free trial | Not detected on official site (checked 2026-09-16) | Mentioned on the official pricing page |
| Documentation | docs.obsidian.md/ | docs.capacities.io/ |
| Company | Not detected on official site (checked 2026-09-16) | Capacities |
| In their own words | The free and flexible app for your private thoughts.— official site (homepage description), checked | Capacities is a note-taking and knowledge management app that organizes your ideas as connected objects instead of files and folders. Available free on Mac…— official site (homepage description), checked |
| Official channels | GitHubThreadsBlueskyMastodondeclared on obsidian.md via homepage link with a matching handle / rel=me | X (Twitter)YouTubeDiscordRedditInstagramdeclared on capacities.io via schema.org sameAs |
| Official website | obsidian.md | capacities.io |
| Site preview | ||
Rank = neutral rotation by listing ID, not a quality score · how it works
Only platforms with an official store or installer link are listed; others may exist.
Obsidian is Freemium; Capacities is Freemium. Both are listed in Productivity on ToolDock.
What they have in common: #notes
Obsidian is listed as freemium (free tier alongside paid plans); Capacities is listed as freemium (free tier alongside paid plans). Pricing label set at listing time; official pricing page linked where verified — see each official website for current details.
Both are Productivity tools listed on ToolDock, and they share the tag notes.
ToolDock keeps a tag-matched alternatives list for each: see Obsidian alternatives and Capacities alternatives.