I've released one of my personal software projects, rexCrawler. It is a program I use at work to search specified files/folders for (optionally) specified text/patterns. Knowledge of regular expressions is suggested, but unnecessary. Output can be sent to the screen, a CSV (comma-separated values) file, or both.
You can download the file at the rexCrawler homepage on Google Sites.
Note: rexCrawler requires the Microsoft .NET Framework v3.5 or later.