YourNote - Notes app that puts privacy first
Better Notes - Simple notes app that ties notes together with #hashtags
Curator - The visual notes app, now on iPhone!
Milanote - Milanote is a note taking app for creative work.
Cryptee - Cryptee is a safety and privacy focused, encrypted and cross-platform personal data storage service. You can write personal documents, notes, journals, store photos and all sorts of other files.
Tyke - Mac menu bar app that @torrez really needed to take notes