MouseTweaks is a collection of accessibility enhancements for pointing devices. The Mousetweaks package provides the functions offered by the Accessibility tab of the Mouse preference tool. It also contains two panel applets related to the mouse accessibility. More particularly:
Enables users to perform a secondary click by doing a click-and-hold of the primary mouse button.
Offers a way to perform the various clicks without using any hardware button. In this context, the Dwell Click panel applet can be used to choose what click type to perform.
A secondary or right-click can be issued by using the primary button and keeping it held down for a specified delay.
A click can be issued by having the mouse pointer dwell in a given spot for a specified delay. In this mode, the click-type is determined by the ClickType window, or by the direction in which the user moves the mouse after the dwell time has elapsed. The click-type can be single, double, drag or right.
Most mouse-related accessibility options can be found by using System → Preferences → Mouse and selecting the Accessibility tab.