siyuan Review

siyuan is a personal knowledge management (PKM) tool developed by B3log that enables individuals and teams to organize and connect information with a focus on data ownership and offline functionality. It employs a block-based architecture, treating every content element as an individual, linkable component. This system allows for flexible organization, linking, and rearrangement of information, supporting the creation of comprehensive digital gardens and structured documentation. The software prioritizes complete offline usage, storing all data locally on the user's device, ensuring privacy and control. Beyond basic note-taking, siyuan integrates features such as spaced repetition flashcards, utilizing the FSRS algorithm, and offers built-in database views with relations, supporting SQL querying directly against note content for dynamic views and report generation.

siyuan provides a robust set of features designed for comprehensive personal knowledge management, emphasizing data privacy, control, and advanced organizational capabilities. Its architecture supports a highly interconnected knowledge base through block-level linking and a flexible content model.

siyuan is tailored for users who prioritize data privacy, self-hosting, and advanced knowledge organization. Its feature set makes it suitable for a range of personal and professional applications requiring structured information management and robust linking capabilities.

siyuan operates on a freemium business model. The core application, offering full local-first functionality and all basic features, is available for free. This includes the Markdown WYSIWYG editor, block-level references, bidirectional links, and database capabilities. Paid tiers or subscriptions are primarily associated with advanced services such as official cloud synchronization and specific integrations like S3 and WebDAV, which have been noted to be behind a paywall. Specific pricing figures for these paid services are not publicly detailed in the provided data, but users have described the official cloud sync service as comparatively pricey.