Qt is a widget toolkit for creating graphical user interfaces as well as native cross-platform applications that supports Linux, Windows, macOS, Android and embedded systems. It is available under both commercial licences and open-source GPL 2.0, GPL 3.0, and LGPL 3.0 licenses.

Release Schedule Image Gantt Chart for Qt
Release Released OSS support Commercial support Latest
6.6 4 months and 3 weeks ago
(09 Oct 2023)
Ends in 1 month and 1 week
(09 Apr 2024)
Ends in 7 months
(09 Oct 2024)
6.6.2
(14 Feb 2024)
6.5 (LTS) 11 months ago
(31 Mar 2023)
Ended 4 months and 3 weeks ago
(09 Oct 2023)
Ends in 2 years
(31 Mar 2026)
6.5.3
(28 Sep 2023)
6.4 1 year and 5 months ago
(28 Sep 2022)
Ended 11 months ago
(31 Mar 2023)
Ended 5 months ago
(28 Sep 2023)
6.4.3
(16 Mar 2023)
6.3 1 year and 10 months ago
(11 Apr 2022)
Ended 1 year and 5 months ago
(28 Sep 2022)
Ended 10 months ago
(11 Apr 2023)
6.3.2
(08 Sep 2022)
6.2 (LTS) 2 years and 5 months ago
(30 Sep 2021)
Ended 1 year and 10 months ago
(11 Apr 2022)
Ends in 7 months
(30 Sep 2024)
6.2.4
(16 Mar 2022)
6.1 2 years and 10 months ago
(05 May 2021)
Ended 2 years and 5 months ago
(30 Sep 2021)
Ended 1 year and 10 months ago
(05 May 2022)
6.1.3
(31 Aug 2021)
6.0 3 years ago
(08 Dec 2020)
Ended 2 years and 10 months ago
(05 May 2021)
Ended 2 years and 2 months ago
(08 Dec 2021)
6.0.4
(03 May 2021)
5.15 (LTS) 3 years and 9 months ago
(25 May 2020)
Ended 3 years ago
(08 Dec 2020)
Ends in 1 year and 2 months
(25 May 2025)
5.15.2
(13 Nov 2020)
5.14 4 years ago
(11 Dec 2019)
Ended 3 years ago
(12 Dec 2020)
Unavailable 5.14.2
(30 Mar 2020)
5.13 4 years and 8 months ago
(18 Jun 2019)
Ended 3 years and 8 months ago
(19 Jun 2020)
Unavailable 5.13.2
(28 Oct 2019)
5.12 (LTS) 5 years ago
(04 Dec 2018)
Ended 2 years and 2 months ago
(05 Dec 2021)
Unavailable 5.12.12
(25 Nov 2021)
5.9 6 years and 9 months ago
(29 May 2017)
Ended 3 years and 9 months ago
(31 May 2020)
Unavailable 5.9.9
(16 Dec 2019)
5.6 (LTS) 7 years and 11 months ago
(15 Mar 2016)
Ended 4 years and 11 months ago
(16 Mar 2019)
Unavailable 5.6.3
(20 Sep 2017)
4.8 (LTS) 12 years ago
(15 Dec 2011)
Ended 8 years ago
(31 Dec 2015)
Unavailable 4.8.7

Releases follow Semantic Versioning. There is a new minor release approximately every six months, which is supported with bug and security fixes until the next minor release.

Some releases are designated as Long Term Support (LTS) releases. Those are supported for three years but only for commercial license holders. For open source users, they are same as regular releases.

Extended support beyond EOL is available as a commercial offering from The Qt Company.

The KDE Project maintains a patch collection to support Qt 5.15 LTS for open-source users. Moreover, the code of commercial releases is made open within 12 months and some level of security support still seems to continue in the form of code patches. This does not reflect in the table above as we only track official releases from https://www.qt.io.

More information is available on the Qt 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:
qmake --version

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/qt.json. See the API Documentation for more information. You can subscribe to the iCalendar feed at /calendar/qt.ics.