I would like to tell you about 2 freeware tools that I use daily.
Bare Grep is a file and inner file searching tool. It has all the basic search options like reg-ex and wild card search.
Bare Tail is a log file monitoring tool. It can highlight log rows by predefined strings.
The reason I love these 2 tools is:
A. They are freeware(yeah I know there are paid versions but the freeware versions are not bad at all).
B. They are very straight forward.
C. Most important – they are extremely light-wight.
Download from products web site.