Hi, i have seen this modloader in the mods for 1.13 in the twitch app but it did not add the 1.13-rift-1.0.1 in the versions folder in the roaming appdata folder .minecraft/versions it is installed and it works with the Java Launcher. I copyed the 1.13-rift-1.0.1 from .minecraft/versions to the version directory of twitch but it dont work :( any idea how i can use your modloader with twitch?

I also wish that you could sync rift with Twitch. It already has some 1.13 mods synced with the twitch launcher on curseforge. I am also wondering when rift will come out for 1.14?

Rift isn't planned for 1.14 just yet, since 1.14 isn't even out.

Twitch launcher is beyond the control of Rift. Twitch and CurseForge are very particular and aren't open-source, so there is no current way to use Rift with Twitch. I would recommend using the MultiMC instance the developers have created.
Rift.zip