Based on our record, MultiMarkdown Composer should be more popular than MarkdownPad. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
First off, CriticMarkup is an "extension" to Markdown with syntax for addition, deletion, substitution, comment, and highlight. Knowing this might help you find tools which support it. I know MultiMarkdown Composer on Mac is one such tool. Source: almost 2 years ago
It is closer to Multimarkdown. As a pandoc GUI, it should be compared to PanWriter which is open-source is grown from within the pandoc community, where you can contribute to make it better. Also try the VSCode extension vscode-markdown-it-pandoc which applies the markdownit extension in PanWriter to VSCode’s markdown extension. Source: over 2 years ago
To those comparing to other softwares: It is closer to [Multimarkdown](https://multimarkdown.com/). As a pandoc GUI, it should be compared to [PanWriter](https://panwriter.com) which is open-source is grown from within the pandoc community, where you can contribute to make it better. - Source: Hacker News / over 2 years ago
(Opened article in Reader mode in browser, copied it, pasted into Markdownpad, cleaned up article (removed image captions, MORE: lines), made the whole article a quote, and pasted here in the comments.). Source: almost 2 years ago
(I used http://markdownpad.com/ to quickly format the quoted article for posting here on Reddit). Source: about 2 years ago
Typora - A minimal Markdown reading & writing app.
MacDown - MacDown is an open source Markdown editor for OS X, released under the MIT License.
Markdown by DaringFireball - Text-to-HTML conversion tool/syntax for web writers, by John Gruber
Frost - An open API for Blockchain timestamping
StackEdit - Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.
MWeb - Pro Markdown writing, note taking and static blog generator