Bublup 6.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is Bublup, Inc.
Bublup for Mac lies within Productivity Tools, more precisely Office Tools. 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.
From the developer:
Your app for saving, organizing, and sharing all the things! Save recipe links, work and school documents, meeting notes, how-to videos, family photos, your favorite playlist, and more all in fun visual folders. Folders (and sub-folders) allow you to keep everything organized in one place, so you always know where important docs and links are.
You may want to check out more software for Mac, such as PitStop Extreme, 3dissue or FileOpenInstaller, which might be similar to Bublup.