AlgebraicManipulation — manipulate algebraic expressions

BasicMathInput — insert math typesetting

BasicTypesetting — further typesetting, including arrows and operators

ColorSchemes — select a color scheme

NotebookLauncher — create empty notebooks using different stylesheets

SlideShow — create and configure slide shows

SpecialCharacters — access all Mathematica special characters

Generate Palette from Selection — create a palette from the selected cells or notebook

Generate Notebook from Palette — convert a palette into an ordinary notebook

Install Palette — add a palette to the Palettes menu