Heptabase alternatives: 3 free & open-source picks
Curated, verified, and actually free. No trials, no crippled tiers. Star counts and last-activity dates checked by hand, not scraped and forgotten.
Cards, block links and whiteboards for sense-making, with rougher furniture.
licenseAGPL-3.0
runsyour machine or their cloud
installDownload the desktop/mobile release or use the hosted web app; no server is required for a local graph
dataClassic file graphs are folders of Markdown or Org-mode files plus Logseq configuration/cache files and can be synced with a file service; the newer DB graph stores the graph in a local SQLite database, while optional Logseq Sync/RTC sends graph data to Logseq's service
the catch vs HeptabaseIts links and whiteboards are powerful, but whiteboard polish, mobile experience, and performance are rougher, while the newer database path still carries beta risk.
setupStable local installation is simple, but the visually stronger DB graph/RTC path is still beta or alpha and explicitly carries data-loss warnings; free cross-device file-graph sync requires choosing and safely operating a third-party file-sync method
facts verified 2026-08-14
Documents and an infinite canvas in one local-first app, without the research tax.
licenseMIT AND MPL-2.0
runsyour machine or their cloud
installUse AFFiNE Cloud or install the desktop app; self-hosted collaboration uses the official Docker Compose stack with AFFiNE, PostgreSQL, and Redis
enginesAFFiNE AI supports bring-your-own-key routes for OpenAI, Anthropic, Gemini, and FAL; local storage is available in the desktop app, while self-host AI is configured server-side
dataA local-only desktop workspace stays on that device; AFFiNE Cloud stores it in AFFiNE's service, while self-hosted workspaces use PostgreSQL for structured data, mounted blob storage for uploads, Redis for cache, and local configuration files
the catch vs HeptabaseIt offers documents and an infinite canvas, but its canvas is less specialized for research cards, spatial synthesis, and guided sense-making than Heptabase's.
setupThe desktop app is straightforward, but free self-hosted sync and collaboration require Docker, PostgreSQL, Redis, persistent volumes, configuration, migrations, backups, and a correctly exposed server URL
facts verified 2026-08-14
Canvas boards backed by linked Markdown files and an enormous plugin drawer.
licenseproprietary, free
runson your machine
installInstall the native Windows, macOS, Linux, iOS, or Android app; no account is required for local use
dataOrdinary Markdown files and attachments in a user-chosen local vault folder, with app settings and plugins under `.obsidian`; optional paid Obsidian Sync stores end-to-end-encrypted replicas in Obsidian's cloud
setup✓ installs clean
the catch vs HeptabaseCanvas supplies free-form boards, but it lacks Heptabase's purpose-built card workflow, research structure, and guided visual knowledge experience.
facts verified 2026-08-14
last updated 2026-08-14 · no votes, no pay-to-list · just what's real
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Logseq | AGPL-3.0 | one-click install | macos, windows, linux, ios, android | 44,299 | 2026-08 |
| AFFiNE | MIT AND MPL-2.0 | one-click install | web, macos, windows, linux, ios, android, self-hosted | — | — |
| Obsidian | proprietary, free | one-click install | macos, windows, linux, ios, android | — | — |
Heptabase: People pay for a writing surface they trust for years, plus migration tools, sync, and tiny interaction details that disappear into habit. If none of that applies to you, any pick above saves $107.88 a year.
Is there a free alternative to Heptabase?
Yes: Logseq, AFFiNE, Obsidian. Every tool on this page is either open source or genuinely free to use long-term: no trials, no crippled tiers.
Should I just build my own Heptabase?
Our verdict is SÍ. Heptabase's solo core is compact: build a local-first visual knowledge mapping app with fast capture, full-text search, backlinks, tags, and Markdown export. A competent builder can reach a useful personal version in one sitting, while the paid product mainly wins on polish, sync, importers. If you'd rather build, the exact one-shot prompt is free at puedovibecodearlo.app/heptabase.
