It is quite sad that SASS-style nesting doesn't make it to the CSS spec.

Now we need an additional `&` before each rule and also a `@nest` in some situations.

Ghost's source code might be a good start.

They already have most things you need but the Git integration.

We can't even export Google Docs in its native format. If one day Google shutdown Google Docs, you probably loses your documents forever.

All StackOverflow answers are Creative Commons by now. That won't be possible.

Zulip is uglier in every aspect, like colors, icons, spacing and content organization. They should hire or recruit an UI designer.