Ramme - The Unofficial Open Source Instagram Desktop App
Stylizer - A productivity-focused real-time CSS editor for serious web developers. Mac OS X and Windows.
IGdm - Instagram direct messaging on your laptop
EnjoyCSS - CSS generator for rich graphical styles without coding
Later - Schedule and manage your Instagram posts
Rapid CSS Editor - Rapid CSS editor is quick, powerful and easy to use HTML and CSS code editor for web developers. Intuitive interface and intelligent features help you become more productive and create modern HTML5 and CSS3 based websites faster and easier.