APRS modem software without connect?

Is there any type of software that can produce the APRS packets but that do not have to connect to a repeater? I want it to just send text strings not to use on the HAM bands. I would just like to experiment with it on CB radio. I have used multipsk but you have to connect before you can send text. Is there a way to make a connection between 2 computers with this via CB without having to connect to a repeater? Thanks.

For your technical ARPS questions that are not RV related, Recommend any number of APRS forums.
You can try here or here.
Good Luck.

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