Yunnan Liandi Technology Co., Ltd.

Yunnan Liandi Technology Co., Ltd. is the Chinese publisher behind the open-source knowledge-management ecosystem anchored by SiYuan, a privacy-first personal knowledge management platform that combines block-based note-taking, bidirectional linking, and local Markdown storage with end-to-end encryption. Typical users range from researchers assembling literature reviews and developers documenting API decisions to students building Zettelkasten archives and small teams maintaining collaborative wikis. The software operates as a desktop application for Windows, macOS, and Linux, while optional Docker images and mobile clients turn it into a self-hosted knowledge base that remains fully functional offline and syncs through WebDAV or S3 when desired. Beyond core editing, SiYuan integrates flash-card spaced repetition, SQL-powered queries, custom templates, and a plugin marketplace that extends it into task boards, kanban views, and database dashboards, effectively covering categories such as note-taking, outliner tools, lightweight project management, and secure data vaults. Liandi complements the main client with browser extensions that clip web pages as Markdown, a command-line importer for Obsidian and Notion exports, and community-driven themes that re-skin the interface for minimalist writing or academic citation workflows. All components are released under permissive licenses, encouraging third-party developers to embed the editor or sync engine into larger productivity stacks. The publisher’s software is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always installing the latest versions and supporting batch installation of multiple applications.