SiYuan vs Zoho Notebook

SiYuan is a personal knowledge management system for building a linked collection of notes. It supports Markdown, block-level references and bidirectional links, and organizes content into blocks with more than 20 block-level and more than 10 span-level element types. Backlinks can be filtered and searched; relationship graphs are available across a notebook and at block level. Databases support relations, rollups and templates, while flashcards use the FSRS spaced-repetition algorithm. Its AI feature connects to OpenAI for writing continuation, translation, summaries, brainstorming and grammar or spelling corrections. SiYuan supports offline access, and the maker describes multi-device synchronization as incremental and end-to-end encrypted. It is available on Windows, macOS, Linux, iOS, Android and the web, with a Chrome/Edge extension, API and Docker self-hosting. The maker says data stays under the user's control on their device. Free access is free; PRO Features is listed at $64 a month with lifetime-use wording, and Subscription at $148 a month with 8GB cloud storage.

Zoho Notebook is a freemium note-taking app for web, Windows, macOS, Linux, iOS, and Android. It supports offline access, note sharing, and real-time collaboration, so notes can remain available without a connection and can be worked on with others. The free Essential plan costs nothing and includes 500 MB of cloud storage, 20 note versions, a 3 MB maximum notecard size, and 10 MB file uploads. Pro Plus lists 500 GB of storage, 500 MB maximum notecard size, recordings up to 180 minutes, and 30 hours of AI transcription per month, with no price listed. For Business lists 1 TB for up to 10 users, 100 GB additional storage per user, and 1000 note versions, also without a listed price. Integrations include Samsung Devices, IFTTT, Google Workspace, Slack, Microsoft Teams, Google Drive, Zapier, and Zoho services. The maker is identified as Zoho Notebook, founded in 1996.