Downloading downloadFromSlideshare 1.0.0.2 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of this free Mac application is extramaster. The application lies within Internet & Network Tools, more precisely Download Managers.
From the developer:
Fortunately, slideshare contains a very simple and exploitable "flaw" that allows anyone to download presentations, however it requires manual and repetitive work. This tool was created with the objective of automating that process and, hence, provide a simple way of "opening" up slideshare a litte. No invasion of privacy, as the tool works purely as an interface between your computer and slideshare's servers. no third party to deal with.
You may want to check out more Mac applications, such as Unofficial RapidShare Tool, Myster or nicovidedownloader, which might be similar to downloadFromSlideshare.