Home / Alternatives to Obsidian / Obsidian vs Trilium Notes

Obsidian vs Trilium Notes

A side-by-side look at Obsidian (the paid SaaS) and Trilium Notes (the open source alternative). Use this page to decide if the switch fits your team and workflow.

Obsidian Trilium Notes
Tagline Local-first markdown knowledge base (closed source, free for personal use). Hierarchical personal notes with scripting.
License Proprietary SaaS AGPL-3.0
Pricing Free for personal use; Sync $5/month. Free to self-host
Self-host option No Yes — difficulty 2/5
Hosted cloud available Yes (only option) No
Desktop apps Varies by product Windows, macOS, Linux
Mobile apps Official apps typically available None official
Ad slot — between tables

Best for

Hierarchical structure instead of Obsidian's graph approach.

Trilium Notes strengths

  • Deep hierarchical notes with relations.
  • Scripting support for automation inside notes.
  • Strong for large personal knowledge bases.

Trilium Notes weaknesses

  • No official mobile apps.
  • UI feels dense for new users.
  • Original maintainer stepped back; Trilium Next fork is active.

What's the catch with Obsidian?

  • Not open source despite being free.
  • Mobile app is limited compared to desktop.
  • Sync requires paid add-on or custom setup.

Still unsure?

Check the full list of alternatives to Obsidian: see Obsidian alternatives, or learn more about Trilium Notes on its project page.