After using Notion and Obsidian for three years, this architect ultimately made SiYuan Note the backbone of his knowledge base. The choice deserves attention because it addresses two pain points professional users have long overlooked: data ownership and offline use. Yet the claim that it offers the “best overall experience” remains, for now, a personal assessment rather than a settled conclusion.
What this is
SiYuan Note is an open-source, local-first note-taking application. Local-first means data is stored on the user's device first, allowing editing and search even without an internet connection. Its core structure is built around “blocks”: a heading, paragraph, image, or code snippet can be referenced and rearranged independently.
SiYuan aims to combine Notion-style visual formatting with Obsidian-style control over data. Users can also sync through their own WebDAV, S3, or NAS setup and use end-to-end encryption to protect content in transit.
Industry view
For personal knowledge management, SiYuan's value extends beyond being a “free alternative.” Notion excels at mature cloud collaboration and polished interactions, while Obsidian offers open, plain-text data ownership. SiYuan sits between them, particularly appealing to users who need technical documentation, architecture diagrams, and writing materials to remain on local storage for the long term.
The risks are equally clear. The original article provides no large-scale test data on stability, team collaboration efficiency, or migration costs. Its plugin ecosystem is less developed than Obsidian's, and its online multiplayer collaboration trails Notion. Its local file structure is also more complex, meaning it is not immune to software-vendor influence in the way some marketing claims suggest. Users still need to verify end-to-end encryption, data-loss protection, and cross-device conflict handling for themselves.
Impact on regular people
For enterprise IT: When knowledge is scattered across personal devices and lacks unified permissions and collaboration standards, SiYuan can ease concerns about hosting sensitive material. However, enterprises still need to account for backups, account deprovisioning, and auditing, and should not directly replace a controlled document system.
For individual professionals: People who frequently write proposals, tutorials, and meeting notes can use block-level references and offline editing to reduce time spent organizing information. Even so, migrating a small batch of important material and testing synchronization is usually safer than moving everything at once.
For the consumer market: Free synchronization and self-hosted storage will continue to pressure some personal subscription tools. Use cases centered on team collaboration, however, will still give products such as Notion a reason to charge.