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Ziproxy is forwarding HTTP proxy server aimed to speed up low-bandwidth connections. It does so by gzipping HTML and using lossy compression of GIF, PNG and JPEG pictures. Ziproxy also offers JPEG 2000 support, transparent proxying and more.
Authentication, Access Control, and Single Sign-On
DACS,a light-weight single sign-on and role-based security system for Apache or server-based software, provides comprehensive authentication capabilities, and powerful, transparent rule-based authorization checking for any web service or CGI program.
The latest release is DACS 1.5.2 (28-Aug-2026)
It is not available here!
Get it at https://dacs.dss.ca/download.html
PEPsal is an integrated, multi-layer, transparent TCP Performance Enhancing Proxy which splits the connection into two parts, making use of Linux TCP enhancements when sending data, and largely improving performance in links with different characteri
Microsoft Exchange compatible server and client libraries
...OpenChange client-side library is used in existing messaging clients and is the solution in new projects to communicate natively with Microsoft Exchange and Exchange-compatible servers. OpenChange server is a transparent Microsoft Exchange server replacement using native Exchange protocols and does not require any plugin installation in Outlook.
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proxyconnect send HTTP CONNECT request to HTTP proxy to build transparent tunnel between its stdin/stdout and dedicated port on remote host.
can be used to provide proxy support for SSH by adding a ProxyCommand directive in ssh_config.
P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.
Incredibly versatile distributed filesystem. The aim of this project is to provide a FUSE filesystem capable of transparent multi-master, replication and raid-like behavior.
cmdftp is a command line FTP client for Unix systems that features shell-like functions, passive mode, local and remote transparent modes, broken connection resumption, multiple and recursive file transfers, auto-login, and large file support.
Ircproxy is transparent IRC content-filtering application. It may be used whenever there is a need of monitoring IRC connections.It may be used to deny specific connections or to behold suspicious IRC traffic.
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nssl is intended to be a netcat-like program with transparent Secure Socket Layer support, either clear or encrypted sessions can be used. It requires OpenSSL library to be installed.
KSB26 [Kernel Socks Bouncer] is Linux Kernel 2.6.x loadable module that redirects tcp connections (to user-defined target hosts) through socks 4/5 chains, in a complete transparent way.
Tentun is a tunneling project that introduces the innovative concept of modifying packet traffic to include completely transparent covert traffic to existing streams of data. Tentun also aims at unifying different tunneling implementations.
Frox is a transparent ftp proxy for linux, *BSD, and other UNIX like systems. It optionally supports
non-transparent proxying, caching, rewriting of ftp requests as http, transparent virus scanning, and conversion from active<-->passive mode ftp.
HTTP Proxy Client is the set of libraries and scripts, provides transparent access to Internet via HTTP proxy tunnel for programms, which uses TCP/IP for communication. The tunnel provided by CONNECT method of HTTP proxy. Supported external DNS resolving.
tsocks provides transparent network access through a SOCKS version 4 or 5 proxy (usually on a firewall). tsocks intercepts the calls applications make to establish TCP connections and transparently proxies them as necessary.
INFS provides high level access to the Internet by transforming the DNS (or another network namespace) into a virtual filesystem, principally enabling directory-style navigation and making IPv4/v6 addresses transparent to applications.
Bypass is an IP forwarding/tunneling tool which can be used where limited bypassing of a firewall is necessary, but relaxing the restrictions in the actual firewall is not an option. The aim is for bypass to be automatic and transparent.