1)   MetaCompress 2.4
MetaCompress packs requested content of a web site on-the-fly. This increases your site's accessibility for users who have a slow dial up connection and speed ups the loading of pages on your site in general.

 2)   PipeBoost 2.2.226
PipeBoost™ is an HTTP compression software that runs on Internet Information Services 4.0, 5.x, 6.0. It compresses static/dynamic content that is downloaded by a browser running on a customer or end user’s computer.

 3)   httpZip 3.8.4
Port80's httpZip Microsoft IIS Web server software accelerates sites, speeds up Web-based apps, and reduces bandwidth costs dramatically. HTTP compression shrinks the size of common Web files safely and automatically provides browser compatibility.

 4)   HTTP Compression Module 1
Reduce bandwidth useage up to 80 percent and make your web site more responsive with better load times.