DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
AquaSnap - Too many windows on your screen? Stop wasting your productivity.
Ultramon - UltraMon is a piece of software built to help with the management of multiple screens on the same computer system. Without software like this, taking full advantage of an expanded desktop space can be difficult.
Sizer - Sizer is a freeware utility that allows you to resize any window to an exact, predefined size.
Actual Multiple Monitors - Actual Multiple Monitors is a software utility which offers the comprehensive solution to improve the functionality of Windows user interface for comfortable and effective work with multi-monitor configurations.
MinimOther - Endlessly minimizes all windows except the active one.