[citrablue]

I'll second the recommendation for Notion.so. It's a neat piece of software developed by people who are unreasonably into making the killer note taking app.

I use it to replace Evernote, primarily, but also for building requirements docs, todo lists, or notes.

[softawre]

Woah, this is the killer note app. It's Onenote+Trello with /-commands and keyboard shortcuts.