Lifecycle

Nagios Enterprises Product Lifecycle

Release dates, version history and end-of-support dates for 5 Nagios Enterprises products and 43 versions.

Releases and Lifecycle

Release dates, version history and support and end-of-life dates as published by Nagios Enterprises. Dates within the next 12 months are highlighted; past dates are dimmed. Retrieved 2026-10-14.

Nagios Core 6 versions

Version	Released	Source
4.5	16 Nov 2023	[2]
4.4	19 Jun 2018	[2]
4.3	21 Feb 2017	[2]
4.2	1 Aug 2016	[2]
4.1	18 Aug 2015	[2]
4.0	20 Sep 2013	[2]

Nagios Fusion 7 versions

Version	Released	Source
2026R2	22 Sep 2026	[3]
2026R1	19 Nov 2025	[3]
2024R2	4 Dec 2024	[3]
2024R1	29 Nov 2023	[3]
4.2	18 Oct 2023	[3]
4.1	15 Feb 2018	[3]
4.0	17 Jul 2017	[3]

Nagios Log Server 8 versions

Version	Released	Source
2026R2	29 Sep 2026	[4][5]
2026R1	17 Sep 2025	[4]
2024R2	19 Mar 2025	[4]
2024R1	5 Dec 2023	[5]
2.1	17 Sep 2019	[5]
2.0	14 Nov 2017	[5]
1.4	21 Dec 2015	[5]
1.3	8 Oct 2015	[5]

Nagios Network Analyzer 7 versions

Version	Released	Source
2026R2	30 Sep 2026	[6]
2026R1	17 Dec 2025	[6]
2024R2	3 Dec 2024	[6]
2024R1	28 Nov 2023	[6]
2.4	14 Feb 2019	[6]
2.3	29 Aug 2017	[6]
2.2	4 Jan 2016	[6]

Nagios XI 15 versions

Version	Released	Source
2026R2	23 Sep 2026	[1]
2026R1	24 Sep 2025	[1]
2024R2	3 Jul 2025	[1]
2024R1	6 Dec 2023	[1]
5.11	27 Jun 2023	[1]
5.10	16 May 2023	[1]
5.9	18 Aug 2022	[1]
5.8	13 Jan 2021	[1]
5.7	8 Jun 2020	[1]
5.6	18 Apr 2019	[1]
5.5	28 Jun 2018	[1]
5.4	28 Dec 2016	[1]
5.3	3 Oct 2016	[1]
5.2	8 Oct 2015	[1]
2011R1	28 Feb 2011	[1]

Sources 6

Nagios XI Changelog retrieved 2026-10-14
Nagios Core 4.x Changelog retrieved 2026-10-14
Nagios Fusion Changelog retrieved 2026-10-14
Nagios Log Server Changelog retrieved 2026-10-14
Nagios Log Server 2024R1 and earlier Changelog retrieved 2026-10-14
Nagios Network Analyzer Changelog retrieved 2026-10-14