SiYuan
b3log.orgOrganize a personal knowledge base with block-level notes, references, and bidirectional links.
Organize a personal knowledge base with block-level notes, references, and bidirectional links.
An open-source academic notebook that brings Markdown notes, PDF annotations, and literature management together.
Collect notes, links, tasks, and files as visual cards on walls with several views and sharing options.
A local Markdown notebook that maps the path between connected ideas.
Arrange notes, images, links, and files on visual boards for creative project thinking.
AI study tools that turn notes, PDFs and slides into flashcards, quizzes, notes and mind maps.
A web notes app with wikilinks, a knowledge graph, spaces, tags, search, and cross-device sync.
AI voice notetaker that turns speech into notes, to-dos and output.
An Android handwriting workspace with notebooks, PDF markup, sticky notes, and corkboards.
AI note taker that watches videos and saves Markdown notes to Obsidian
Interactive school maths practice, games and worksheets with class and assignment tools.
Pilates classes for mat, Reformer and other equipment
Yoga classes with goal-based search and practice programs
Free web-security videos and capture-the-flag practice.
Dance cardio, sculpt and strength classes with guided programs
Dance-cardio and sculpt classes through online and studio routes
AI note taker that turns lectures and uploads into notes, transcripts and study materials.
A simple free desktop notebook with safe saves, version history, folders, and a focus mode.
A free, open-source notebook for organizing notes in the browser or on desktop.
Write naturally by hand and add PDF pages to notes for markup.
A local-first knowledge notebook that combines text, handwriting, boards, and linked notes.
A free, open-source Markdown editor for research notes and long-form writing.