Obsidian is a relatively new entrant in the increasingly crowded Markdown knowledge base and note-taking market. Obsidian’s excellent Markdown support and its simple, straightforward design makes it a standout application in the category. Desktop and mobile applications are available.

Obsidian Markdown application

Obsidian sports virtually all of the standard fare common to the other applications in this category, but it ups the ante by including a number of other features for power users. There’s a visually-striking graph view that’s a kind of “mind map” of all your files stored in Obsidian, a “Markdown format importer” that can find and replace certain Markdown syntax elements in your files, and support for math and diagram syntax. That really just scratches the surface of Obsidian’s capabilities. Obsidian is extensible, and there are dozens of free community plugins available within the application.

Two other features are worth mentioning. Obsidian provides a simple way to publish notes to the internet, and it stores all of your files in plaintext Markdown files containing only the text you enter.

Obsidian Markdown Support

Obsidian provides support for the following Markdown elements.

Element Support Notes
Headings Yes
Paragraphs Yes
Line Breaks Yes
Bold Yes
Italic Yes
Blockquotes Yes
Ordered Lists Yes
Unordered Lists Yes
Code Yes
Horizontal Rules Yes
Links Yes You can link to other notes in Obsidian by using the [[file name]] syntax.
Images Yes
Tables Yes
Fenced Code Blocks Yes
Syntax Highlighting Yes See the list of supported languages.
Footnotes Yes
Heading IDs No
Definition Lists No
Strikethrough Yes
Task Lists Yes
Emoji (copy and paste) Yes
Emoji (shortcodes) No
Highlight Yes
Subscript No
Superscript No
Automatic URL Linking Yes
Disabling Automatic URL Linking Yes
HTML Partial Some HTML is sanitized for security purposes.

See Also