You could have downloaded SarAnt 1.1.0 for Mac from our application library for free. The actual developer of this free Mac application is Laurence Anthony. SarAnt for Mac lies within System Tools, more precisely File Managers.
From the developer:
SarAnt is a simple freeware search and replace tool that searches through a set of text files (UTF-8 encoded) and iteratively performs search and replace operations as defined in a list of rules. SarAnt is developed in Python and Qt using the PyInstaller compiler to generate executables for different operating systems.
You may want to check out more software for Mac, such as eps2pdf, Little Disc+ 3 Trial or Files Renamer, which might be similar to SarAnt.