https://epiphany.pub/post?refId=2684bc94f9fcb9ffe637ebfbeba2...
Epiphany is a crossover of Jupyter notebook and Medium.com,
Not only can you write text, you can also program on it, to create interactive examples, see:
https://epiphany.pub/post?refId=4c411b8a0b5207739f97e787d2af...
In addition to interactivity, Epiphany implements version control, forking and pull request. You can collaborate with others just like you do on github.
https://epiphany.pub/history?refId=2684bc94f9fcb9ffe637ebfbe...
It also has the social publishing feature as seen on Medium.
Finally, users own their content. Epiphany has a download button to allow downloading all blog data.
The format used by Epiphany, unlike that of Jupyter, is in plain text and is human readable.
disclaimer: I made Epiphany