One of the big changes that Lightning brought to Salesforce was the removal of a traditional folder system and the introduction of Salesforce files/libraries. Of course, when changing anything that people are used to, this was met with either raving support or significant resistance. So, for those of you who miss the old days of file folders, this app is for you! FOLDERIZE gives you a way to store your documents in that more traditional file system, even in Salesforce Lightning.
Folderize provides an alternative to Salesforce Files/Libraries, and to the Attachments related list for objects. It offers a hierarchical structure helpful for organizing many document collections.