SiYuan

SiYuan - Privacy-first personal knowledge management system that supports Markdown, block-level ref, and bidirectional links

Cost

Free

Rating

★ People love it

Time to value

Quick Setup (< 1 hour)

You can use SiYuan to create personal knowledge bases using markdown blocks that connect to each other. You write notes in blocks, link them together with bidirectional connections, and see relationships through visual graphs. It works offline, syncs across devices with encryption, and includes features like flashcards, databases, and AI writing assistance. Everything stays private on your device.

What SiYuan does

Write notes in markdown with block-level editingLink blocks together with bidirectional referencesCreate flashcards for spaced repetition learningVisualize note connections through knowledge graphsSync encrypted notes across multiple devicesUse AI to continue writing or fix grammarOrganize content with folding outlinesSearch and filter through backlinks panelWorks completely offline without internetBlock-level editing for granular content controlBidirectional links between any content blocksVisual knowledge graphs show note connectionsEnd-to-end encrypted sync across devicesBuilt-in spaced repetition flashcards with FSRSAI writing assistance through OpenAI integrationMobile server mode for local network access