Fractal Trace is already included in Gimp , but hard to use because the microscopic preview
The difference is all in the preview size now multipled.
NOTE ,: this is a replacement not a additional plugin
..so to install first remove the original plugin
thank to Francois Collard there is also a windows binary
download the Fractal-Trace-Big-Preview zip
sorry no binary yet, ...maybe YOU may help with a build ?
is the first link
i do not upload here to not confuse with too much download options but is available also
Pentium 4, win binary optimized for Pentium 4
Gimp 2.7, same hack but on the 2.7version
in case let a message i will add download links in the reply