Apps Related to Sync on Many Devices

Gruik is a powerful, free, and open-source note-taking service designed for users who value privacy, organization, and control over their data. Offering robust features like hierarchical organization, offline access, rich text formatting, and synchronization options, it provides a flexible platform for managing notes, ideas, and personal knowledge wikis.

Springseed is a discontinued, yet elegant and straightforward note-taking application designed for simplicity and efficiency. It leverages Markdown for formatting and offers seamless synchronization with Dropbox, making note management and accessibility across devices intuitive.

Leanote is a versatile self-hosted note-taking application that blends rich text editing with Markdown support. It offers seamless synchronization across multiple devices and features built-in blog publishing capabilities, making it a powerful tool for both personal information management and content creation.