@realcaseyrollins if the app isnt FOSS already then it cant be "forked" at best it might be cloned. So might want to use differnt language when you search and get better results.
There are certainly lots of SMS messaging apps that behave very similarly. I guess it depends on what your looking for.
@realcaseyrollins Have you tried QKSMS? I havent used it so I myself cant comment but it is a popular alternative that I know is open-source
@realcaseyrollins
Theres the AOSP app
com.android.messaging
These AOSP apps provide crucial system functionality (Calendar, Camera, Gallery) are now meant to be demo apps for companies that make phones rather than for end users
Messaging, sometimes with minor alterations (adding a dark theme) is used in many non-profit/community AOSP based operating systems/ROMs
Think its wired up for RCS
Likely needs your OS to have stuff for your cell network provider set up right
If I"m not getting confused Googles Messages is a very well developed proprietary fork of the open source app Messaging, which is still developed/maintained.
Not sure that anyone who is reliable/trustworthy is providing apks outside of complete OS builds.
Think you may have to build an apk yourself or unpack a complete OS/ROM release and grab the apk from there
If I had to pick a place to grab a fork I'd check out ProtonAOSP first
@realcaseyrollins No I'm not saying that. I dont know if its FOSS. It sounded like you were saying it wasnt FOSS and wanted a FOSS alternative. If its already FOSS is there a reason youa re looking for a fork?