Puma is a simple, fast, threaded, and highly parallel HTTP 1.1 server for Ruby/Rack applications. Puma is intended for use in both development and production environments. It's great for highly parallel Ruby implementations such as Rubinius and JRuby as well as as providing process worker support to support CRuby well.

Release History

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Version Date Stability
6.2.0 Mar 29, 2023 stable
6.1.1 Feb 28, 2023 stable
6.1.0 Feb 12, 2023 stable
6.0.2 Jan 1, 2023 stable
6.0.1 Dec 20, 2022 stable
6.0.0 Oct 14, 2022 stable
5.6.5 Aug 23, 2022 stable
5.6.4 Mar 30, 2022 stable
4.3.12 Mar 30, 2022 stable
5.6.2 Feb 11, 2022 stable
4.3.11 Feb 11, 2022 stable
5.6.1 Jan 27, 2022 stable
5.6.0 Jan 25, 2022 stable
5.5.2 Oct 12, 2021 stable
5.5.1 Oct 12, 2021 stable
4.3.10 Oct 12, 2021 stable
4.3.9 Oct 12, 2021 stable
5.5.0 Sep 19, 2021 stable
5.4.0 Jul 29, 2021 stable
5.3.2 May 21, 2021 stable
5.3.1 May 11, 2021 stable
4.3.8 May 11, 2021 stable
5.3.0 May 7, 2021 stable
5.2.2 Mar 2, 2021 stable
5.2.1 Feb 5, 2021 stable
5.2.0 Jan 27, 2021 stable
5.1.1 Dec 10, 2020 stable
5.1.0 Nov 30, 2020 stable
4.3.7 Nov 30, 2020 stable
5.0.4 Oct 27, 2020 stable
5.0.3 Oct 26, 2020 stable
5.0.2 Sep 28, 2020 stable
5.0.1 Sep 28, 2020 stable
5.0.0 Sep 17, 2020 stable
5.0.0.beta2 Sep 5, 2020 beta
4.3.6 Sep 5, 2020 stable
4.3.5 May 19, 2020 stable
3.12.6 May 19, 2020 stable
4.3.4 May 18, 2020 stable
3.12.5 May 18, 2020 stable
5.0.0.beta1 May 12, 2020 beta
4.3.3 Feb 28, 2020 stable
3.12.4 Feb 28, 2020 stable
4.3.1 Dec 5, 2019 stable
3.12.2 Dec 5, 2019 stable
4.3.0 Nov 7, 2019 stable
4.2.1 Oct 7, 2019 stable
4.2.0 Sep 23, 2019 stable
4.1.1 Sep 9, 2019 stable
4.1.0 Aug 8, 2019 stable
4.0.1 Jul 11, 2019 stable
4.0.0 Jun 25, 2019 stable
3.12.1 Mar 19, 2019 stable
3.12.0 Jul 13, 2018 stable
3.11.4 Apr 12, 2018 stable
3.11.3 Mar 6, 2018 stable
3.11.2 Jan 19, 2018 stable
3.11.1 Jan 19, 2018 stable
3.11.0 Nov 20, 2017 stable
3.10.0 Aug 17, 2017 stable
3.9.1 Jun 3, 2017 stable
3.9.0 Jun 1, 2017 stable
3.8.2 Mar 14, 2017 stable
3.8.1 Mar 10, 2017 stable
3.8.0 Mar 9, 2017 stable
3.7.1 Feb 20, 2017 stable
3.7.0 Jan 28, 2017 stable
3.6.2 Nov 22, 2016 stable
3.6.1 Nov 21, 2016 stable
3.6.0 Jul 25, 2016 stable
3.5.2 Jul 20, 2016 stable
3.5.1 Jul 20, 2016 stable
3.5.0 Jul 19, 2016 stable
3.4.0 Apr 7, 2016 stable
3.3.0 Apr 5, 2016 stable
3.2.0 Mar 20, 2016 stable
3.1.1 Mar 18, 2016 stable
3.1.0 Mar 6, 2016 stable
3.0.2 Feb 26, 2016 stable
3.0.1 Feb 26, 2016 stable
3.0.0 Feb 25, 2016 stable
3.0.0.rc1 Feb 20, 2016 rc
2.16.0 Jan 28, 2016 stable
2.15.3 Nov 7, 2015 stable
2.15.2 Nov 6, 2015 stable
2.15.1 Nov 6, 2015 stable
2.15.0 Nov 6, 2015 stable
2.14.0 Sep 18, 2015 stable
2.13.4 Aug 16, 2015 stable
2.13.3 Aug 16, 2015 stable
2.13.2 Aug 15, 2015 stable
2.13.1 Aug 15, 2015 stable
2.13.0 Aug 15, 2015 stable
2.12.3 Aug 4, 2015 stable
2.12.2 Jul 17, 2015 stable
2.12.1 Jul 16, 2015 stable
2.12.0 Jul 14, 2015 stable
2.11.3 May 19, 2015 stable
2.11.2 Apr 11, 2015 stable
2.11.1 Feb 11, 2015 stable
2.11.0 Jan 20, 2015 stable
2.10.2 Nov 27, 2014 stable
2.10.1 Nov 24, 2014 stable
2.10.0 Nov 24, 2014 stable
2.9.2 Oct 30, 2014 stable
2.9.1 Sep 5, 2014 stable
2.9.0 Jul 13, 2014 stable
2.8.2 Apr 12, 2014 stable
2.8.1 Mar 6, 2014 stable
2.8.0 Feb 28, 2014 stable
2.7.1 Dec 5, 2013 stable
2.7.0 Dec 4, 2013 stable
2.6.0 Sep 13, 2013 stable
2.5.1 Aug 13, 2013 stable
2.5.0 Aug 8, 2013 stable
2.4.1 Aug 7, 2013 stable
2.4.0 Jul 22, 2013 stable
2.3.2 Jul 9, 2013 stable
2.3.1 Jul 6, 2013 stable
2.3.0 Jul 6, 2013 stable
2.2.2 Jul 2, 2013 stable
2.2.1 Jul 2, 2013 stable
2.2.0 Jul 2, 2013 stable
2.1.1 Jun 20, 2013 stable
2.1.0 Jun 18, 2013 stable
2.0.1 Apr 30, 2013 stable
2.0.0 Apr 29, 2013 stable
2.0.0.b7 Mar 19, 2013 unknown
2.0.0.b6 Feb 7, 2013 unknown
2.0.0.b5 Feb 6, 2013 unknown
2.0.0.b4 Dec 13, 2012 unknown
2.0.0.b3 Nov 22, 2012 unknown
2.0.0.b2 Nov 19, 2012 unknown
2.0.0.b1 Sep 12, 2012 unknown
1.6.3 Sep 4, 2012 stable
1.6.2 Aug 27, 2012 stable
1.6.1 Aug 12, 2012 stable
1.6.0 Aug 12, 2012 stable
1.5.0 Jul 19, 2012 stable
1.4.0 Jun 4, 2012 stable
1.3.1 May 16, 2012 stable
1.3.0 May 8, 2012 stable
1.2.2 Apr 28, 2012 stable
1.2.1 Apr 11, 2012 stable
1.2.0 Apr 11, 2012 stable
1.1.1 Mar 31, 2012 stable
1.1.0 Mar 30, 2012 stable
1.0.0 Mar 29, 2012 stable
0.9.5 Mar 3, 2012 stable
0.9.4 Mar 2, 2012 stable
0.9.3 Jan 9, 2012 stable
0.9.2 Dec 19, 2011 stable
0.9.1 Dec 6, 2011 stable
0.9.0 Dec 6, 2011 stable
0.8.2 Nov 22, 2011 stable
0.8.1 Oct 25, 2011 stable
0.8.0 Oct 25, 2011 stable