Apps similar to Notesnook include Obsidian, which has a free version. Other options are Joplin, Anytype, Logseq and Notion. Note-taking Tools like Notesnook are a crowded field, with more than 100 alternatives for Mac, Windows, the web, Linux and Android.
Block-organized, privacy-focused scratchpad for developers with language-specific syntax highlighting and auto-formatting, supporting JavaScript, JSON, Markdown, notes, API responses, and daily planning, all in a persistent local buffer with minimalist interface.
Sweden
EU
ZenNotes is a keyboard-first Markdown notes app with a shared product core and multiple runtimes:
This program is a structured notetaking application based on GTK+ 3. Write your notes in instantly-formatted Markdown, organise them in a tree of folders that can be instantly navigated from within the program, and add hand-drawn notes by mouse, touchscreen or digitiser.
Vietnam
Inkdrop is an AI-native Markdown note-taking app for developers, available on macOS, Windows, Linux, iOS, and Android, with end-to-end encrypted sync.
Japan
Your team’s knowledge base Team wiki, documentation, meeting notes, playbooks, onboarding, work logs, brainstorming, & more….
United States
Silver Bullet is an extensible, open source, personal knowledge management system. Indeed, that’s fancy talk for “a note-taking app with links.” However, Silver Bullet goes a bit beyond just that.
United States
Efficient hierarchical information manager for Windows, offering note storage in a single file with customizable tree structures, password protection with 1800-bit encryption, instant search, a rich text editor, multiple language support, and portable use without installation.
Ukraine
TiddlyRoam is your open source external brain. TiddlyRoam allows you to quickly create your own wiki. You can add fragments of thoughts and findings whenever they come to you. TiddlyRoam will link them and help you spot the patterns.
Carnet is a complete and rich note taking app for Android and Linux that can be synced with NextCloud (selfhosted) or the official Carnet server.
Visual information management for creatives - Organize knowledge intuitively using cards and boards
United Kingdom
Minimalist productivity platform offers centralized notes, task management, meeting capture with audio summaries, inbox processing, and Markdown editing, all enhanced by AI prioritization, custom prompts, backlinks, and flexible workflows, supporting multiple methodologies.
