Obsidian is a software for personal knowledge management (PKM) based on
Markdown files. It's available on various platforms such as
Windows, Mac, Linux, Android, and iOS.
You can make it as simple or sophisticated as you like. A very active
community is offering a wide variety of plugins to add almost
any feature you can think of.
👉 Check out the
Obsidian web page.
Definition according to
Wikipedia:
Markdown is a lightweight markup language for creating formatted text
using a plain-text editor. John Gruber created Markdown in 2004 as a
markup language that is easy to read in its source code form. Markdown
is widely used for blogging and instant messaging, and also used
elsewhere in online forums, collaborative software, documentation pages,
and readme files.