sshterminal
Terminal and iTerm uses whatever method they are using to ssh that basically slows down if the network connection to the server is slow. All the commands I type would show up on the screen seconds later. Is there a client I can use where the command would render faster on screen regardless the speed of the network?
P.S., with UDP being blocked, I cannot use mosh.
I found a thread about the simulatecrash command. It says you need to use simulatecrash -h to make it work properly. As for the apps, I don't think you can launch apps from the command line as you would a shell command. You can try /var/Applications/Name.app/Name but I can't confirm if this works because my iPhone is not jailbroken.
If you are looking for something that keeps track of servers/connections via a GUI, Terminal.app will already do that for you. Launch it and then from the menu select Shell > New Remote Connection. This will give you a connections manager window.
Best Answer
As you cannot use mosh, your choices are very limited.
You can use the following perl-based wrapper for the standard OpenSSH command supplied with macOS to enable line-mode:
https://github.com/mnalis/ssh-line-mode/blob/master/sshlm
Remember to read the instructions before use:
https://github.com/mnalis/ssh-line-mode/blob/master/USAGE.txt