I use IB for premarket and after hours. Also Investing.com. I also use Investing.com for a quick look at the market and check on my stocks when I am mobile during RTH.
I don't have time for coding. I used to do a lot of coding but never made me trade better.
I do wish SC had tick charts. Can't remember if FSC has tick charts or not. It is so hard to run. If I have Chrome open and then open IE, it always crashes my computer. Firefox says that the new release has SilverLite embedded in their coding, need to try them out.
I ended up not buying since my sub goes into 2019 already. If taken the rate becomes $20/mo. I too much time invested in the charts and how I got everything laid out to start over. For sure i dont like not having AH info. But Investing.com gives me snapshot. Yahoo or going on to my broker site, gives me bid/ask after hrs. SC has a bid/ask but doesnt work always especially AH.