I've also developed another GTK3-based application Rust to ease the process of renaming TV series with support for inserting titles obtained from TVDB into the filenames and templates so that you can choose your own naming scheme.
The GTK3 GUI is enabled by building it with --features "enable_gtk" and running the application with the --gui flag.
[quote="hoodie, post:4, topic:5867"]
How good is the X-Platform story of gtk-rs though, does it also work in windows?
[/quote]It does (only tested with *-gnu targets), we try to stay platform-neutral. GTK+ itself could give you some issues on Windows.