• Tolerance setting allows you to quickly change the minimum angle between planets for them to be considered aligned
• Ability to search for planets aligned from the vantage point of either the earth or the sun
• Alignments are displayed in an easily navigable list for simple selection of dates and specific alignments
• "Only record alignments of three or more planets" option conveniently sorts out more common alignments, leaving only more interesting alignments in the list
• Convenient "draw lines between aligned planets" option visually shows the positions of the planets on the main window

In this screenshot, the alignment of Mercury, Venus, Jupiter, and Uranus (as seen from Earth) is demonstrated by lines on the main window.