There is a list of clients here.
SVT uses the official client for most of their shows, like Melodifestivalen or the ESC in Stockholm, but also for news and a lot of other stuff. So I think this client is quite complete and far away from being basic.
Sure it depends what you want to do and how much automation you want to have. I used to do custom clients for all my bigger productions in the past, but now I do a lot using my Excel AddIn. Excel can do a lot and the AddIn only sends the data, that Excel is preparing to CasparCG for display.