Operating System Software used at Sites in January 2008

This analysis relates to those sites found in the survey where the common name in the certificate matched the hostname, and the certificate's digital signature was not detected as being self-signed.

Responses were obtained from 3364 sites, with the following distribution of operating system software.

Other views of this data are on separate pages:

The following pie chart shows the moving average shares over time.

The next graph shows the actual development of shares over time.

Market Shares by Operating System Version to January 2008

Operating System	Moving Avg. %	2005	2006	2007												2008
Operating System	Moving Avg. %	Jan	Jan	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Jan
Linux	50.18	726	951	1270	1290	1338	1362	1403	1450	1493	1537	1574	1605	1645	1677	1694
Windows Server 2003	25.52	156	278	546	586	623	655	683	732	787	796	821	837	858	864	883
unknown	9.53	125	157	207	242	267	258	257	262	276	271	292	310	309	335	336
Windows 2000	5.52	404	387	187	191	186	180	171	168	173	173	173	168	162	154	152
FreeBSD	2.87	46	61	76	79	75	75	79	88	88	89	91	91	93	94	95
Solaris 9/10	2.53	15	37	57	60	65	71	72	78	82	82	79	79	85	82	86
Solaris 8	1.13	62	56	40	37	37	37	37	33	34	34	31	35	33	34	31
F5 Big-IP	0.46	0	3	10	9	11	9	11	11	15	14	15	15	16	14	18
AIX	0.42	19	22	15	18	18	16	16	15	17	12	11	10	11	11	11
HP-UX	0.40	13	15	14	14	14	13	13	13	14	13	13	13	11	11	11
MacOSX	0.36	3	3	5	6	10	9	10	10	11	12	12	13	13	11	12
AS/400	0.30	3	6	6	7	7	8	8	8	8	8	8	10	9	11	12
NetWare	0.29	5	7	10	10	10	11	11	11	10	10	9	9	9	7	8
NT4/Windows 98	0.19	39	20	8	8	7	6	6	6	6	6	6	5	5	5	4
Solaris 2/7	0.10	22	9	3	3	3	3	2	2	3	3	3	3	3	3	3
SCO UNIX	0.06	0	0	0	0	0	0	0	0	0	0	2	2	3	3	3
NetBSD/OpenBSD	0.06	1	3	1	1	1	1	1	2	2	2	2	2	2	2	2
IRIX	0.04	5	2	1	1	2	2	1	1	1	1	1	1	1	1	1
OpenVMS	0.03	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1
BSD/OS	0.01	2	3	1	1	1	1	1	1	0	0	0	0	0	0	0
MacOS	0.01	0	1	1	1	1	1	1	1	1	0	1	0	0	0	0
NetApp NetCache	0.01	0	1	0	0	0	0	0	0	0	0	0	0	0	1	1
Compaq Tru64	0.00	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0