Apps with 'Nested tags' feature
- An open source note taking and to-do application with synchronisation capabilities.
- Standard Notes is a simple and private notes app. It allows you to write and sync your notes across all your devices, including your iPhone, iPad, Mac, and web browser.
- Notable is a cross-platform note app. Notes are plain Markdown files, their metadata is stored as Markdown front matter. Attachments are also plain files, if you attach a picture.