Unfortunately same of the best MD editors have critical limitations
- Dynalist, i.g., would be an excellent md editor, but it forces you to use an online account (that means: a) you must be connected to the internet, and b) you share your data with Dynalist, and so your privacy goes away).
- VNote too would be a good md editor, but it forces you to use its proprietary format (with only files in its own folder), and so you can’t open any existing md file.
- LogSeq is very slow in starting, doesn’t provide a wysing editor, can’t edit long files, and, as the other above editors, it don’t let you open, modify and save existing md files.
- Joplin is a bite better, but it too don’t let open, modify and save existing md files: you must use its folder, and its proprietary format.
- Siyuan is another app that force you to use its folder and its proprietary format.
- MdSilo is not a bad program, but is very basic. Its wysing is alternative to the source code. Re-open a file is not easy at all. Styling the editor impossible.
- Markflowy: not too bad, open source, and wysing; but you cannot see the source code, and most important, you cannot open the file you want, neither from outside the app, nor inside it.
- Obsidian (not open source) was not able to open or save any md file, even though it uses markdown. Now it can do both open and save a md file, in a very interesting wysing mode, but it forces you within its narrow proprietary boundaries.
- MarkText would be quite good wysing md editor, quite similar to Typora, but unfortunately it is discontinued.
- Typora is the best md wysing editor: it support css customization and symlinks, you can easily open and save your md existing files (wherever they are). But is is not open source, but a pay app.