Apps with 'Nested tags' feature

Obsidian is a note-taking app that lets you create a personal knowledge graph with ease. It is designed for non-linear thinking and allows you to easily link your notes together wiki-style.

Open source note-taking app with Markdown support, to-do integration, and synchronization with cloud services like Dropbox and OneDrive.

An end-to-end encrypted note-taking by Proton. Offline access, unlimited sync across devices, tagging, passcode and biometric security, plus advanced premium privacy features.

Cross-platform app for creating and organizing notes from text, web pages, images, and voice memos. Offers security features and integrates with various tools.

Flexible writing and note-taking tool with markdown, plain text storage, cross-note links, hashtags, powerful search, Focus Mode, iCloud sync, and export options.

Amplenote allows you to take notes and link those notes to functional task and contacts lists for seamless project management. It supports integration with Google and Outlook calendars to schedule tasks and allows e-mail integration as well.

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.jpg to a note everything about it will be preserved, and it will remain accessible like any other...

View your notes without being limited by your file system's hierarchy. Transform VSCode into a note-taking app by adding tag support.