Simply the best and most flexible note taking app for a developer

Like other reviewers have shared their experiences, I have tried OneNote, Evernote, Sublime Text, Atom, Mou, MacDown, etc.

Nothing compares to Quiver because it gives me the freedom to write using whichever format and even mix them together. I can write rich text, Markdown, LaTeX, plain text, and now even diagrams (without having to awkwardly jump between different apps and converting diagrams). The new 3.0 update also lets me show/hide whichever parts of the UI I want and I can customize how every single part of the app looks via CSS (it does include a few dark/light built-in themes though) and even how exported HTML/PDF/Prints look like.

tl;dr: it saves time, it performs well, it looks great, and lets me write something up however I want.

Leafzor about Quiver - take better notes