I prefer Djot over Markdown (opens in new tab)

Markdown is very useful, widely adopted and at a first glance simple. But the simplicity falls apart when you look at edge cases, compatibility across applications and non-basic features. And despite the heroic effort of CommonMark, the fragmentation seems to grow with more dialects and extensions rather than consolidating. Even strict adherence to CommonMark would leave us with a spec that is large and hard to understand and implement due to the focus on codifying the markup as it was used, ...