Squid

server-app

Squid is a caching proxy for the web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. It runs on most available operating systems, and is licensed under the GNU GPL.

Release Released Security Support Latest
6 9 months ago
(06 Jul 2023)
Yes 6.5
(06 Nov 2023)
5 2 years and 8 months ago
(31 Jul 2021)
Ended 9 months ago
(06 Jul 2023)
5.9
(01 May 2023)
4 5 years and 9 months ago
(03 Jul 2018)
Ended 2 years and 6 months ago
(04 Oct 2021)
4.17
(04 Oct 2021)
3.5 9 years ago
(13 Jan 2015)
Ended 5 years and 8 months ago
(07 Aug 2018)
3.5.28
(16 Jul 2018)
3.4 10 years ago
(08 Dec 2013)
Ended 8 years ago
(01 Aug 2015)
3.4.14
(01 Aug 2015)
3.3 11 years ago
(09 Feb 2013)
Ended 8 years and 11 months ago
(01 May 2015)
3.3.14
(01 May 2015)
3.2 11 years ago
(14 Aug 2012)
Ended 8 years and 11 months ago
(01 May 2015)
3.2.14
(01 May 2015)
3.1 14 years ago
(29 Mar 2010)
Ended 11 years ago
(08 Jan 2013)
3.1.23
(08 Jan 2013)
2.7 15 years ago
(27 May 2008)
Ended 14 years ago
(14 Mar 2010)
2.7.9
(14 Mar 2010)
3.0 16 years ago
(14 Dec 2007)
Ended 12 years ago
(27 Aug 2011)
3.0.26
(27 Aug 2011)
2.6 17 years ago
(01 Jul 2006)
Ended 14 years ago
(26 Mar 2010)
2.6.24
(26 Mar 2010)
2.5 21 years ago
(24 Sep 2002)
Ended 17 years ago
(20 May 2006)
2.5.14
(20 May 2006)
2.4 23 years ago
(20 Mar 2001)
Ended 21 years ago
(02 Jul 2002)
2.4.7
(02 Jul 2002)

Release schedule

Major stable versions are released in July every 2 years. Beta branches are spawned six months before the corresponding major stable release. A Roadmap is maintained for planned features.

Security Advisories are published on GitHub and can be subscribed with a GitHub account or via the squid-announce mailing list. Commercial support is available from various companies.

More information is available on the Squid website.

You should be running one of the supported release numbers listed above in the rightmost column.

You can check the version that you are currently using by running:
squid -v

You can submit an improvement to this page on GitHub :octocat: . This page has a corresponding Talk Page.

A JSON version of this page is available at /api/squid.json. See the API Documentation for more information. You can subscribe to the iCalendar feed at /calendar/squid.ics.