I thought I'd share a more positive comment. I work on a tool in a similar area (moving stuff around) but on a higher level. I currently use rsync or rclone for the file moving parts. So to me your tool looks interesting and promising, thanks for sharing it :)
Some suggestions for improvement for your website/Github:
- I wanted to understand how it differs from rsync. A comparison page would be helpful.
- A comparison to rclone would also be interesting, as it also uses multiple parallel connections.
- As it target more advanced users I think it would be helpful to provide more advanced technical insights on how your transfers exactly work. Also how are edge cases handled, what tests are done? Moving and copying files is critical, and you need to inspire trust in your project among users.