I have collected the following api/sdk/whatever which provide modules for doing url rewriting in IIS 5/6/7. Some are free-open source and some require $.

I haven't tried any of them. I would like to know if anyone is currently using or used or have any kind of experience with these tools (website listed). 

```
UrlRewritingNet.UrlRewrite - http://www.urlrewriting.net/159/en/downloads.html

IIS Mod-Rewrite Pro ($) -http://www.iis.net/downloads/default.aspx?tabid=34&g=6&i=1469

Open Source - http://urlrewriter.net/

Helicon Tech (Full $)- http://www.isapirewrite.com/

ISAPI_ Rewrite 3.0 ($) - http://www.seoconsultants.com/windows/isapi/3/

Open Source Ionics Isapi Rewrite Filter - http://iirf.codeplex.com/

```

Any help would be greatly appreciated.

Thanks.
Murali