Flickr “Big Upload” Tool?

I’m only aware of 3 Flickr upload tools for the Mac:

I’m trying to upload ~18GB of photos.

Flickr Uploadr will only accept single groups of files for upload, not folders of files. Same with 1001. This is a problem.

JUploadr will accept folders, but keeps crashing.

All of these apps create a thumbnail of or otherwise process each photo before uploading which seems both unnecessary and incredibly time consuming.

Where is my “batch upload these 18GB of photos” app?

Is there one for the PC? I guess I could do this from Windows if I had to.