Locking notes to prevent accidental editing/deleting

Date and time quick filter

Option to wipe notebook clean after N wrong password entering attempts

Configurable hotkey for inserting note text into other apps (instead of fixed Ctrl+Enter)

Collaboration: support for multiple users working with same shared notes database

Three-Frame-View -- Window Layout with Tags, Titles and Note content

Colored tags

Drag-and-drop tags onto notes

Drag and drop notes onto sections (tabs)

Automatically added tags (Default tags)