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Knowledge Base 2 alternatives tracked

Open-source alternatives to Roam Research

Roam Research is a note-taking tool built around bidirectional linking and daily pages, popularizing block-based hierarchical note structure and the 'second brain' networked thought approach. It uses a proprietary graph database backend and targets power users building dense knowledge graphs through linked blocks. Roam's influence on subsequent note-taking tools (Logseq, Obsidian) is significant.

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The alternatives

logseq

★ 42,676 Clojure AGPL-3.0

A privacy-first, open-source platform for knowledge management and collaboration. Download link: http://github.com/logseq/logseq/releases. roadmap: https://logseq.io/p/NX4mc_ggEV

logseq/logseq Updated 2026-05-06

Trilium

★ 35,885 TypeScript AGPL-3.0

Build your personal knowledge base with Trilium Notes

zadam/trilium Updated 2026-05-05

Comparison notes

Logseq (AGPL) is the most direct OSS Roam alternative, built around the same block-based, daily-page, bidirectional-linking design. It uses local Markdown or Org files as storage (vs. Roam's proprietary backend). Trilium (AGPL) provides a more hierarchical tree-based approach with similar linking. The main gap: Roam's block embedding (transcluding a block from another page inline) is more flexible than Logseq's current implementation. Roam's query syntax for building filtered views of your knowledge graph is unique. Self-hosted Logseq requires managing its own sync for multi-device access (Logseq Sync or self-hosted Git).

Migration tips

  • Export your Roam database as JSON or Markdown EDN from Settings → Export All
  • Use the roam-to-logseq community conversion tool to convert the export to Logseq's EDN/Markdown format
  • Block UIDs in Roam do not translate to Logseq — block-level embeds and references will need manual cleanup
  • Set up Logseq sync (Logseq Sync paid, or Git-based self-hosted sync) for cross-device access before migrating
  • Roam's queries ({{query: {and: [...]}}}) have no direct Logseq equivalent — recreate as Logseq queries with adjusted syntax

FAQ

Can I fully replace Roam Research with an OSS tool?

Feature parity varies. Most OSS alternatives cover 70-90% of core workflows, but may lack polish, integrations, or specialized features. Pilot the alternative with a subset of your team before fully committing.

What's the cost of self-hosting?

Plan for ~$5-50/month in VPS costs (DigitalOcean, Hetzner, etc.) plus 2-8 hours/month in maintenance. For a team of 20+, self-hosting usually breaks even against SaaS pricing within 6-12 months.

Which alternative should I pick?

Sort by GitHub stars (a proxy for community health), check the last-pushed date (avoid unmaintained projects), and read recent issues to gauge responsiveness.