Resomark

Resomark is a native Mac app for working with Markdown, plain text, code, and documentation directly on your local files.

Open folders from your Mac, pin the locations you use often, browse files in a focused sidebar, and edit Markdown with Live Preview in the same view. Your .md files stay plain text and remain usable in any editor.

For Git-tracked files, Resomark can show rendered Markdown diffs so you can review additions, removals, and edits in context. It also supports Quick Look previews from Finder, wiki links, tables, code highlighting, math, diagrams, and local image embeds.

Resomark does not require an account and does not upload your documents to Resomark servers. It is built for writers, developers, and teams who want a fast native Markdown workbench that stays close to the file system.