5 Useful Firefox Add-ons for Web Producers

Over on Kontain, Future Interactive's Executive Producer Stephen Martin posted an excellent piece on what tools a producer at FI would use in their daily role.

This got me thinking, what tools I use on a daily basis, particularly given I currently work in a very restrictive corporate environment? While I have access to the normal Office suite of applications, the range of utility applications I can install is pretty much nil.