Are these apps actually using the internet connection, or just accessing other computers on the local LAN - Splashtop is what I am thinking. Since if just LAN side, then should not be crashing router.
Raptr seems to be a gaming service, so if it is offering something like games browser you may find it is running too many connections at once, swamping the NAT table in your router, or overloading its ability to resolve DNS. Configuring software to use less simultaneous connections can help
In short, these things are usually router driven, thus question is what ADSL router do you have?