1)   PowerGREP 4.3.2
Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...
grep, egrep, regular expressions, perl, regex, regular expression, regexes, search and replace, search, replace,

 2)   RegexBuddy 3.1.1
Perfect companion for working with regular expressions. Easily create and clearly understand regex patterns. Test any regex on sample strings and files. Use the regex with automatic source code snippets. Collect regex libraries for future use.
regex, regexp, regular expression, regular expressions, grep, search, pattern, replace, split, egrep,

 3)   PatternHelper 1.0
Makes it easy for developers AND beginners to design and test patterns. Patterns written with perl regular expressions, egrep regex, MS Word or Brief pattern matching languages can be designed and tested with syntax highlighting and a s
search, replace, search and replace, find and replace, advanced search and replace, grep windows, global search and replace, sed search and replace, windows utilities, freeware downloads,

 4)   Search 2.3
Handy-dandy text file search utility will quickly and easily find those files containing piece(s) of text. It also allows boolean combination (AND/OR/AND NOT.)
search, find, where, look, scan, examine, grep, egrep, utility, tool,

 5)   XchangeCL 1.5
Need to change some text that could be in hundreds of text files? Well XchangeCL can make this easy for you. It will find files using wild cards and find and replace multiple strings in each one.
find, replace, substitute, search, exchange, change, swap, grep, egrep, utility,

 6)   EasyPattern Engine 2.8
EasyPattern Engine COM DLL provides a cool new way to describe text patterns. They're English-like, powerful and easy to understand. Parse a phone number with [optional punctuation, 3 digits, punctuation, 3 digits, punctuation, 4 digits].
ezpattern, ezpatterns, easypatterns, easypattern, perl, grep, egrep, pattern, easy pattern, easy patterns,

 7)   Xchange 2.7
Need to change some text that could be in hundreds of text files? Well Xchange can make this easy for you. Just enter the text to find, the text to replace it with, drop in the files you want to work with, and press Go! It's done, easy!
find, replace, substitute, search, exchange, change, swap, grep, egrep, utility,

 8)   EasyPattern Helper 2.8
Design perl patterns using point and click! Just highlight the variable text and the text to capture, and EPHelper does the rest! EasyPatterns are a cool new way to describe text patterns. They're English-like, powerful and easy to understand.
ezpattern, ezpatterns, easypatterns, easypattern, perl, grep, egrep, pattern, easy pattern, easy patterns,

 9)   DataPipe 3.7
Advanced interactive search replace directly in database tables with patterns, fuzzy and sounds-like matching,trim leading and trailing blanks and binary characters,correct capitalization,code your own transform in VBScript or JScript and heaps more
database, data, search, replace, search and replace, find and replace, advanced search and replace, grep windows, global search and replace, sed search and replace,

 10)   Eluent Tools 1.8
Eluent Tools is a collection of utilities that includes Eluent Replace, a GUI-based, interactive, multi-file search and replace tool that uses Perl regular expressions and scripting, Eluent Find, a file contents searcher and viewer, and much more.
Find, Search, Replace, Search and Replace, Replace in Files, Find in Files, Grep, Egrep, Fgrep, Perl,