Features

kknow is a Markdown editor, a search engine and a sync client in one small app. This page lists all features. Each section links to a page with the details.

Write

• Live preview. Headings, lists, tables, images and code look finished while you type. → Editor
• Three modes per note: Edit, Side by side and Read. kknow keeps the mode for each note.
• Tables as in a spreadsheet. Tab between cells, sort, move rows and columns, select a rectangle and copy it.
• Images. Paste or drop an image, and kknow saves it into attachments/.
• Mermaid diagrams in the preview, in the colors of your theme.
• Font size per note, from 70% to 200%.

Connect

• Wiki links: [[note]], [[note|alias]], [[note#Heading]], embeds and tags. → Links and Markdown
• Backlinks in the header of each note.
• Safe renames. A rename or a move updates the links in the other notes.

Organize

• Many vaults in one sidebar, as folders in a VS Code workspace. → Vaults
• Labels group vaults, for example #work, and filter the tree and search.
• Bookmarks on lines, tasks from - [ ] items, and a trash with a 30-day restore. → Bookmarks, tasks, trash
• Standalone files. Open any .md file without a vault. → Standalone files

Find

• ⌘K search in all vaults at once, with tantivy and a Russian stemmer. → Search
• ⌘F in the open note, with replace and regular expressions.
• ⌘⇧O to go to a heading.

Share and automate

• Sync with S3-compatible storage or any folder (iCloud Drive, Dropbox). Conflicts keep both versions. → Sync
• MCP server for AI agents. Claude Code, Cursor and other clients read your vaults, do tasks and resolve your comments. → Agents
• Custom commands. Run your own script on a note, a folder or a vault. → Custom commands
• CLI. All data is also available in the terminal. → CLI reference

Make it yours

• Themes: Gruvbox dark and light, and your own JSON themes. → Themes and language
• Shortcuts: change any key in the settings. → Keyboard shortcuts
• Languages: Russian (the default) and English.