CoinOut allows users to turn loose change into store credit.
I actually don't use it yet, but I plan to. I have a friend who works there and he's told me its suite of options is very, very useful.
I don't use them personally, but I have seen it in action and find them to be the best. Also, they have fantastic customer service.
My developer recommended it. It's very flexible and was able to integrate directly into the existing tech we were using. There haven't been any downsides so far.
Dropbox seems to just work better than Google Drive. I'm not all that educated on the other options, but Dropbox has done the trick thus far.
It’s amazing for embedding voice and text chat into software.
The Django dashboard has been absolutely fantastic.
It gives you basic understanding of code, if you don't have it already.
My developer worked at Pivotal Labs. The project management is fantastic, and the interface is really simple and easy to use. I highly recommend it.