The 1.0.2 version of Image Drop for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The bundle id for Image Drop for Mac is com.gutscheine.Image_Drop.
We recommend checking the downloaded files with any free antivirus. Commonly, this program's installer has the following filename: imagedrop_1.0.2.zip. The most popular versions of the program are 1.4 and 1.0. The actual developer of this Mac application is Gutscheine Software ME. The software is included in Internet & Network Tools.
From the developer:
Image Drop is a handy tool for people who upload images regurarly. Just drop an image file onto ImageDrop's dock icon and the file will be uploaded to your chosen image hoster. Image Shack, TwitPic and kttns.org are supported at the moment. If you want other hosters just drop me a mail!
You may want to check out more Mac applications, such as Getty Images Stream, Son of DVD Imager or PDF to JPG Pro : The Batch PDF to Image Converter with Automation, which might be similar to Image Drop.