Apple Notes, Sublime Text, Pen & Paper (and all in that order depending on context). Taking notes digitally without syncing, I'd say stick to your current favo

Apple Notes, Sublime Text, Pen & Paper (and all in that order depending on context). Taking notes digitally without syncing, I'd say stick to your current favored plain text editor. For syncing, there isn't a lot of good stuff out there. You'll be stuck with closed source (like Apple Notes) or using a generic syncing or versioning system like Git, Dropbox, GDrive, S3 etc.