Frogr Flickr Image Uploader
Frogr is a free and open source Flickr image management application for Linux. Using Frogr you can manage accounts in the Flickr image hosting website and upload your images to Flickr. You can also add image titles, descriptions, tags and manage sets and groups pools, set image visibility, content type and safety level, licenses, Geo location information. It also support multiple Flickr accounts and HTTP proxies. It is released under GNU General Public License v3.