Google Chrome Developer Tools - Get started with Google Chrome's built-in web developer tools.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Code Cola - Code Cola is a chrome extension to editor online pages' style visibility.
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
Fiddler - Fiddler is a debugging program for websites.
ConEmu - ConEmu-Maximus5 is a full-featured local terminal for Windows devs, admins and users. Get better console window with tabs, splits, Quake style, copy+paste, DosBox and PuTTY integration, and much more.