This app simply gives you quick access to your Basecamp Classic account.
Simply enter your Basecamp Classic subdomain.
Recently upgraded to the new Basecamp? If so use the "Basecamp Shortcut" in the Chrome Web Store. Look on the Related tab under "More from this developer".
If you need to change the URL in the future, right click on the app icon and choose Options.
The code is available on github released under the MIT license. It's simple to change to use with another service, so please fork it for different services you use.
I am in no way affiliated with 37signals or Basecamp Classic.