Better Notes - Simple notes app that ties notes together with #hashtags
Tresorit - Encrypted cloud storage for your confidential files. Using Tresorit, files are encrypted before being uploaded to the cloud. Start encrypting files for free.
Milanote - Milanote is a note taking app for creative work.
YourNote - Notes app that puts privacy first
Tyke - Mac menu bar app that @torrez really needed to take notes
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.