Being a Markdown-first editor, Obsidian doesn’t support charts by default. That’s where its rich plugin community comes into ...

Score: 4.9/5 For personal use, Obsidian is free, including all app features such as themes, plugins and API access. There’s no need for an account or sign-up, and users can enjoy community support.

Obsidian is the Winamp of productivity tools ... music player extension was the massive number of plugins and themes you could install to make it better, all of them built by enthusiasts.