Rectangle - Window management app based on Spectacle, written in Swift.
WizMouse - WizMouse makes your mouse wheel scroll the window under the mouse even if it's not active. You no longer have to click a window to scroll it.
AquaSnap - Too many windows on your screen? Stop wasting your productivity.
Key Manager - ATNSOFT Key Manager, Key Remapper, Text Paster
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.
X-Mouse Button Control - XMouse Button Control (XMBC) allows you to create application and window specific profiles.