Siyuan
siyuan-note
“思源笔记是一款开源、本地优先、隐私优先的笔记软件，支持 Markdown、块级引用、双向链接、数据库和多设备同步，帮助你管理个人知识”
Siyuan is listed in AugmentArena's Learning index: the maker's own one-liner is “思源笔记是一款开源、本地优先、隐私优先的笔记软件，支持 Markdown、块级引用、双向链接、数据库和多设备同步，帮助你管理个人知识”. The concrete jobs we can justify from the source are a searchable place for everything you write down and keeping the data on your own machine.
Provenance
What we can prove, and what we cannot
Each row is a separate claim with its own status and check date — not one blanket “verified” badge.
- Human capability
- Knowledge that sticks. Our classification, not a vendor claim.
- verified30 Oct 2026
- One-line pitch
- Quoted above.
- provider claimb3log.org30 Oct 2026
- Price
- Open source (AGPL-3.0) — no paid tier required.
- verifiedgithub.com30 Oct 2026
- Platforms
- iOS
- provider claimb3log.org30 Oct 2026
- Launch date
- 30 Aug 2020 — GitHub repository created_at (siyuan-note/siyuan)
- verified30 Oct 2026
What it does
Capabilities we can name
- Note-taking
- On-device processing
- Open source
Concrete jobs
- A searchable place for everything you write down
- Keeping the data on your own machine
- Self-hosting and auditing the code
Where it stops
- No price is published in a form our checker could read, so the price cell says n/v rather than guessing.
Alternatives
What else does this job
NotebookLMGoogle
Use the power of AI for quick summarization and note taking, Gemini Notebook is your powerful virtual research assistant rooted in information you can trust.
Similarity is our editorial judgement: same capability, closest score. It is not a vendor claim and no one paid to appear here.
Head to head
AugmentArena is independent. We do not accept payment for placement, we do not use affiliate links, and a score is our own rubric rather than a vendor claim or a user average. Prices and capabilities change: the check date above is the honest cut-off. Found an error? Tell us — corrections get the same source-and-date treatment. Dataset pass: 185 products, last full re-check 30 Oct 2026.