The latest, stable version of SweepWeave is available for download from GitHub. Both Windows and Linux versions are available, at this time. A version for Mac is not currently available.
To run SweepWeave on Linux, you will need to manually change the permissions of the executable file, (the .x86_64 file,) after downloading it so that you can run the program.
The sourcecode for SweepWeave is also available from GitHub, via this link. The SweepWeave storyworld editor is made with the Godot game engine.
Thanks for trying out SweepWeave, and peace to you.