I just came across this great little app on Y Combinator’s Hacker News site. Slowy markets itself as a “real-world connection simulator and bandwidth limiter” and it seems to work quite well. I am running it on a Mac and it was easy to install and switch on and off. I can test my sites in 56K and LTE network (mobile) environments.
The folks over at Aptivate have spend a lot of time on the low bandwidth/ high latency issue and have created tools like Loband. Loband is fantastic but I still want to see all those images and video. Slowy provides a reality check for those of us who create content for consumers who typically reside in out of the way locations.