SlackBuildsOrg/office/keepnote

KeepNote is a note taking application.

With KeepNote, you can store your class notes, TODO lists, research notes, 
journal entries, paper outlines, etc in a simple notebook hierarchy 
with rich-text formatting, images, and more. Using full-text search, 
you can retrieve any note for later reference.

To use spell checking (optional), you will need python-gnome2-extras.