This app is a plugin for Finder that offers you various helpful features.
A simple solution that allows users to edit plist files on their Mac.
Calculates the md5, sha1 and sha256 hashes for any given file.
Move Items X is a set of Mac OS X-compatible contextual menu plug-ins
Hash-Drop it's a small utility for get the MD5, SHA1 or SHA256 hash of any file.