Middleman

Middleman is an advanced HTTP/1.1 proxy server with features designed to increase privacyand remove unwanted content. Features Supports the HTTP 1.1 and FTP protocols. HTTP and FTP content caching; uses refresh algorithms similar to Squid. Image and embedded object prefetching for FASTER PaGE loading. File rewriting with Perl compatible regular expression substitution. Redirection using regular expression substitution on requested URL`s. Host, file, and MIME-type filtering. Can Process files with any external program. Keep-alive connection pooling to avoid overhead of reconnecting to Web and FTP servers. Can forward through HTTP and SOCKS4 proxies; supports NTLM and Basic Authentication. Can limit Internet usage to certain times; can limit bandwidth usage within arbitrary time periods. Can block content using DNS blacklist services. Can block inappropriate content using a unique keyword scoring system Many URL commands to view information about a requested URL and temporarily change proxy settings; URL command to view changes made to a file with the file rewriting feature. Supports gzip and deflate content encodings. Can upload files to FTP servers. Can delete or rename files, and make or remove directories on FTP servers. Multi-threaded design allows proxy server to take advantage of SMP systems.