TextSeek 2.5.1583 for Mac was available as a free download on our application library. This software for Mac OS X was originally produced by Zest Company.
From the developer:
Character-level desktop search tool for document contents on Windows and Mac OS within seconds, supporting PDF, Word, Excel, Powerpoint and other formats.
The core feature is that TextSeek can perform search character-by-character with no omission, which is quite different from common indexing tools.
It's annoying that after long Windows Search you are told there is no results even some files are just under your nose.