DiskTop has long been a popular Finder-replacement utility for people who need to work with files in ways that the Finder simply doesn't do well. DiskTop enables you to quickly browse through your files, find specific files, work with sets of found files, make files visible and invisible and so on.
PrairieSoft, a new company formed by many of the employees who developed and supported DiskTop at CE Software, has purchased the rights to DiskTop