QST vs SiYuan

A side-by-side comparison of two self-hosted notes & knowledge base options — licensing, setup difficulty, resource needs, and what each one replaces.

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FeatureQSTSiYuan
CategoryNotes & Knowledge BaseNotes & Knowledge Base
LicenseGPL-2.0AGPL-3.0
LanguagePerlTypeScript
Setup difficultyMediumMedium
Min. RAM512 MB512 MB
Deploymentbare-metaldocker, binary, source
GitHub stars★ 45,670
First released20202020
ReplacesNotion, Evernote

Why pick each one

Choose QST if…

  • Released under the GPL-2.0 license
  • Written in Perl
  • Lightweight — runs in 512 MB RAM
QST details

Choose SiYuan if…

  • Powerful block-based model
  • Works offline and self-hosted
SiYuan details

Frequently asked questions

Is QST or SiYuan better?

Neither is universally better. SiYuan has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are QST and SiYuan free and open-source?

Yes. QST is licensed under GPL-2.0 and SiYuan under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run QST and SiYuan with Docker?

QST: check the project docs for container support. SiYuan: yes.

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