Just wanted to share this tool with you.

I needed to search/replace text strings in some 600 files, and I've been downloading a bunch of crappy utilties that doesn't deliver. TextCrawler does this one thing and it does it good. A few features listed from their homepage:

• Find and Replace across files
• Fast searching, even on large files.
• Simple to use interface
• Flexible search parameters
• Text Extractor - rip text into a new file
• Search and replace using Regular Expressions.
• Regular Expression test tool
• Regular Expression library - Save your searches.
• Create backup files
• Highlighted search results
• Export Results
• Batch find and replace operations

Also, it's freeware :)