Opal is an outliner. It lets you organize just about anything - ideas, reports, lists, notes, projects, graphics - as an outline. It stands out for its uncluttered, fluid interface. But Opal includes features not found in other organizers:

• Shrink a topic to a single line
• Alphabetic and numeric sorting
• Magnify on-screen text
• Word count
• Focus on part of the outline
• Multiple selection
• Link to other documents
• Just create notes - no need to name them
• Open Acta outlines
• Spotlight search
• Topic filtering via toolbar Search field
• Smart checkboxes automatically track completion
• Open or save OPML outlines
• 'Smart quotes'
• Complete, self-contained documentation
• Japanese localization