Alternative to printrun (pronterface) command line gcode sender

Hello,

I am looking for an alternative to printrun's command line gcode sender for some reason it likes to stall and that is a problem.

Are there any alternatives that are available a robust. I am using a rasbery pi and do not want to use octoprint.

I am using the devices native serial serial pins and bypassing the USB to serial converter so the flow control would have to happen in the gcode sender.

There is a bash script that is controlling the whole thing.

Any recommendations would be appreciated.

Don't want to sound rude, but maybe it's the bash script that causes the freezes? I never had problems with Pronterface ( on windows PCs/tablets )
OctoPi is the only other option I know, but there IS another. Can't recall the name, it was mentioned here a few weeks ago...