Hawark Li

Free
It determines what files and folders consume most of your disk space.
Free
iSystatus is an application that allows you to monitor your Mac components.
Free
=========================== Easy Duplicate is a powerful tool to find and resolve duplicate photos, documents, spreadsheets, MP3's, and more!
Free
It calculates the MD5 and SHA1, SHA256, SHA512 hashes of a file or string.
Free
Welcome to iPhotoFx, which provides you more than 20 kinds effects.