Topic: Indecent question about choice ( Joined: 26 November 2007 Can try to ask an indecent question? :-) Once very long time ago under Win2000/IIS5 I need rewriter. Taking an opportunity I wish to tell many THANKS to developers for so good, and the main thing a stable product. For that only with that server did not occur, but this Helicon ISAPI-filter has never delivered any problems (from a series 'has adjusted and has forgotten'). My question. What advantages have ISAPI_Rewrite in comparison with free products (example Open Source URL Rewriter fot .Net)? If it is possible, give please the reference to the table of comparisons or something similar. I am sorry for my English:-) We don't make comparision tables with competitiors, because it is indecent :-) But I can provide you with few ISAPI_Rewrite adwantages, if we are talking about version 3: 1. Apache mod_rewrite compatible syntax. 2. Features like proxy, file existance check. 3. Many useful minor features. 4. No ASP.NET engine involved, thus it can rewrite any type of files and dir/default document requests just as any other requests, while ASP.NET may fail to serve it.