CodiMD
Self-hosted collaborative markdown editor.
CodiMD is the open-source, self-hostable edition of the HackMD collaborative editor. Multiple people edit the same markdown document simultaneously in the browser, with a live rendered preview beside the source.
It supports GitHub Flavored Markdown plus diagrams, math via KaTeX, and slide-mode presentations. Teams that need real-time markdown collaboration behind their own firewall run CodiMD on their own servers.
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Try markdown before you install anything
The free online markdown editor gives you a live side-by-side preview in the browser — a quick way to test the syntax CodiMD uses, with nothing to download or sign up for.
Open the editor