[windows] What are good grep tools for Windows?

PowerShell has been mentioned a few times. Here is how you would actually use it in a grepish way:

Get-ChildItem -recurse -include *.txt | Select-String -CaseSensitive "SomeString"

It recursively searches all text files in the current directory tree for SomeString with case sensitivity.

Even better, run this:

function pgrep { param([string]$search, [string]$inc) Get-ChildItem -recurse -include $inc | Select-String -CaseSensitive $search }

Then do:

pgrep SomeStringToSearch *.txt

Then to really make it magical, add the function alias to your PowerShell Profile and you can almost dull the pain of not having proper command line tools.