Squid (software)

Squid Project Logo
Developer(s)Duane Wessels, Henrik Nordström, Amos Jeffries, Alex Rousskov, Francesco Chemolli, Robert Collins, Guido Serassio and volunteers[1]
Initial releaseJuly 1996 (1996-07)
Stable release
4.4 / 27 October 2018; 38 days ago (2018-10-27)[2]
Written inC++
Operating systemBSD, Linux, Unix, Windows[3]
TypeProxy server
LicenseGNU GPLv2[4]
The LAMP (software bundle) with Squid as web cache. A high performance and high-availability solution for a hostile environment

Squid is a caching and forwarding HTTP web proxy. It has a wide variety of uses, including speeding up a web server by caching repeated requests, caching web, DNS and other computer network lookups for a group of people sharing network resources, and aiding security by filtering traffic. Although primarily used for HTTP and FTP, Squid includes limited support for several other protocols including Internet Gopher, SSL,[6] TLS and HTTPS. Squid does not support the SOCKS protocol.

Squid was originally designed to run as a daemon on Unix-like systems. A Windows port was maintained up to version 2.7. New versions available on Windows use the Cygwin environment.[7] Squid is free software released under the GNU General Public License.


Squid was originally developed as the Harvest object cache,[8] part of the Harvest project at the University of Colorado Boulder.[9][10] Further work on the program was completed at the University of California, San Diego and funded via two grants from the National Science Foundation.[11] Duane Wessels forked the "last pre-commercial version of Harvest" and renamed it to Squid to avoid confusion with the commercial fork called Cached 2.0, which became NetCache.[12][13] Squid version 1.0.0 was released in July 1996.[12]

Squid is now developed almost exclusively through volunteer efforts.

Other Languages
Afrikaans: Squid
العربية: سكويد
català: Squid
čeština: Squid (program)
Deutsch: Squid
Ελληνικά: Squid
français: Squid (logiciel)
Bahasa Indonesia: Squid
italiano: Squid
magyar: Squid
Bahasa Melayu: Squid
Nederlands: Squid (software)
português: Squid
русский: Squid
Simple English: Squid cache
тоҷикӣ: Сквид
українська: Squid