OSX Bytes
iFileX
FreeOS X file search that can look at hidden files and file contents.
Mac
iLock
Trial versionSecure Your Files with iLock for Mac
Mac
iTrash
Trial versionUninstall programs using the Levenshtein Distance algorithm to find related files.
Mac
Photo Batcher
Trial versionStreamlined Image Processing with Photo Batcher
Mac
iSonics
FreeConvert any audio format to all popular audio formats.
Mac