I'd like to get real-time data feed from specific fastest brokers-Rithmic and Saxo
You can create demo account on them and try to get their real time data feed.
I don't care of an UI of a program built. You have ONLY to show its real time data feed whenever selecting one of them.
I recommend you to use their platforms to get real time data feed on demo account.
You can confirm how to open their demo accounts from the attachment file below.
Probably you will understand what i mean.
Source code should be delivered after finishing the work.