Can anyone advice me reliable coins that has their own signup system with client area where i can purchase and store coins in my own client area in their website?
I'm curious, why are you so particular about this? Are you trying to avoid exchanges?
Either way, no one can tell you which coins you can profit from. The crypto market is exceedingly volatile and for the most part can't even be figured out by technical analysis. You can instead focus on the most reliable coin, which is Bitcoin. It doesn't have its own site, but it does have its own client (Bitcoin Core), and it's cheap at the moment with a lot of room to grow. It seems like you're just planning on HODLing, in which case Bitcoin is perfect for you.