@trinsec Depending on what exactly is the aspect you are looking for (platform, sync needs and note-taking style), you might want to check QOwnNotes/Obsidian (Linux) and/or Markor (Android). Recently I started to experiment with VSCode (Foam) for Markdown too. All feature auto-safe.
@FailForward NextCloud (self-hosted) & Web, Android, and preferably a Windows desktop version too. Markdown is fine, should be able to have images embedded too.
@FailForward Thanks, I'll take a peek at it!