Limit bandwidth per application

I would really like this ability as well. Main use would be for something like Skype or other video chatting that eat away at bandwidth when you like to multitask.

I found a way to do this. It's a bit roundabout but it works. Rather than limit per application, you limit per server. For example I notice adobe creative cloud usually takes over my entire network connection when it's uploading a file to the cloud server, making it a pain to even browse the internet when it's sending a large file. Using little snitch's network monitor I see it's sending data to "creative.adobe.com", I enter that server into a program called speedlimit and set how much data it should send to that server. Fixed.

little snitch:

http://www.obdev.at/products/littlesnitch/index.html

speed limit:

http://mschrag.github.com/