Trilium
Trilium Notes supports building a personal knowledge base, as described by the project page.
About Trilium
Trilium Notes is an open-source, cross-platform application for building a personal knowledge base with hierarchical notes. Notes can be arranged in an arbitrarily deep tree, with a single note placed in multiple locations through cloning, and the project describes usability with upwards of 100,000 notes. It provides a WYSIWYG editor with tables, images and math, code editing with syntax highlighting, full-text search, note versioning, per-note encryption, and synchronization via a self-hosted server. Sync can also use third-party hosting services, notes can be published to the public internet, and the nightly build is described as unstable while the stable release is recommended for most users.
Key features
- Arrange notes in deep tree with cloning to multiple locations
- Edit rich text with tables, images, math and markdown autoformat
- Edit source code notes with syntax highlighting
- Search full text across notes with version history
- Encrypt individual notes with per-note granularity
- Sync with self-hosted server; third-party hosting options exist
Best for: People who want to build and maintain a large, structured personal knowledge base with self-hosting.
Good for
- Open-source and cross-platform hierarchical note-taking
- Described as usable with upwards of 100,000 notes
- Per-note encryption and self-hosted sync option
Watch out for
- Nightly build is described as an unstable development version
Trilium at a glance
- Category
- Productivity › Notes & Knowledge Management
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Notes & Knowledge Management
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Trilium FAQ
Is it spelled Trilium or Trillium?
The project's canonical spelling is "Trilium Notes," with one l.
Which download should most users choose?
The latest stable release, which is recommended for most users. The nightly build is an unstable development version updated daily.
Where can I read the documentation?
Online at docs.triliumnotes.org, in the app by pressing F1, or in the User Guide in the repository.
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