COLDLINK 

The ColdLink iis isapi filter or apache module transparently maps and rewrites protected urls dynamically in realtime within every page served from your site.
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ServerMask 

ServerMask obscures the identity of a Windows Web server by removing the most obvious signs that you are running IIS. This ISAPI filter removes or modifies unnecessary HTTP response data to make fingerprinting your server more difficult for hackers.
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ETagFix 

ETagFix is an ISAPI plugin which integrates directly into IIS and other web servers to alter the etag that IIS produces so that web crawlers will not check your web site so often.
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ISAPIZip 

ISAPIZip is an ISAPI plugin which integrates directly into IIS and other web servers to increase the performance while reducing the bandwidth required to serve high quality content.
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IIS Accelerator 

ISAPI filter for high performance HTTP Compression and Content Optimization, Whitespace Removing, Image Optimization, Image Re-compression and much more. Makes Web sites up to 4-times faster. Available for all IIS Web servers.
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ClientIPForwader 

ClientIPForwarder is ISAPI plug-in for Microsoft ISA server inserts remote client IP address into http(s) header allowing to monitor real client IP addresses from Application layer protocol, creates or replaces variables in http(s) header.
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