You are viewing an outdated report. The latest version of this report was published on March 1st, 2023

Web server surveys have been around for a long time. One of the problems with running a survey is how to produce meaningful results given the number of choices with the collection and reporting methodologies. Some examples:

• How does one treat wildcarded DNS sites that generate unlimited number of unique hostnames, all residing on the same system?
• How does one treat taste-testing web sites that do not have any unique content on them at all?
• If very large number of web sites reside on a single IP address, is it a a case of search engine spamming, a large number of low traffic web sites on a single platform, or a web hosting facility using load-redirection for a large number of legitimate web sites?
• How "greedy" or aggressive should the hunt for new web sites be?

All of the above are issues that our conventional web server survey deals with. The biggest issue that comes up time and again, however, is the fact that our conventional survey counts unique hostnames, not unique installations. This can seriously impact market share statistics. Case in point: the data set used both web server survey reports contains (for the last month's data set) 1,638,678 hostnames, but only 1,040,247 distinct IP addresses.

This particular report addresses this in part by counting unique IP addresses in an attempt at answering the question of how many installations of a particular server might exist. By using the IP address as a proxy for the physical hardware on which a server is running, we still need to be aware that it is not a perfect 1 to 1 mapping:

• A load balanced network of servers might share a single public facing IP address, and be undercounted.
• A single server may have multiple public IP addresses bound to one or more network cards on the system, and thus still be counted more than once.

While not a perfect solution, we feel that counting web servers by IP will give a much closer view of the number of server installs for a given technology.

Click any server to see detailed graphs and histories.

Server	July 1999 Count	July 1999 %	June 1999 Count	June 1999 %	Growth %
Apache	465,847	44.78	452,196	44.40	0.87
Microsoft-IIS	293,252	28.19	281,787	27.67	1.89
thttpd	50,197	4.83	52,117	5.12	-5.70
Netscape-Enterprise	45,450	4.37	47,417	4.66	-6.15
Rapidsite	29,519	2.84	28,728	2.82	0.61
WebSitePro	16,258	1.56	16,208	1.59	-1.79
null	16,128	1.55	14,915	1.46	5.87
NCSA	15,848	1.52	16,390	1.61	-5.33
Stronghold	12,782	1.23	13,103	1.29	-4.49
Netscape-FastTrack	9,210	0.89	9,423	0.93	-4.30
WebSTAR	8,781	0.84	8,775	0.86	-2.02
Lotus-Domino	7,310	0.70	7,009	0.69	2.11
BESTWWWD	6,374	0.61	6,269	0.62	-0.45
Netscape-Communications	5,839	0.56	6,345	0.62	-9.90
CERN	5,081	0.49	5,252	0.52	-5.28
Netscape-Commerce	4,855	0.47	4,943	0.49	-3.83
WN	3,826	0.37	3,812	0.37	-1.73
Roxen·Challenger	2,616	0.25	2,733	0.27	-6.28
Novell-HTTP-Server	2,127	0.20	2,162	0.21	-3.67
Zeus	1,892	0.18	1,715	0.17	8.02
WebSite	1,835	0.18	1,996	0.20	-9.99
NaviServer	1,557	0.15	1,697	0.17	-10.17
Red	1,283	0.12	1,036	0.10	21.25
Microsoft-Internet-Information-Server	1,246	0.12	1,295	0.13	-5.79
Commerce-Builder	1,143	0.11	1,149	0.11	-2.60
Purveyor	1,074	0.10	1,100	0.11	-4.40
OSU	1,007	0.10	997	0.10	-1.11
ApacheFP	942	0.09	894	0.09	3.17
mod_perl	938	0.09	667	0.07	37.69
Open-Market-Secure-WebServer	912	0.09	898	0.09	-0.56
AppleShareIP	786	0.08	722	0.07	6.59
MacHTTP	736	0.07	738	0.07	-2.36
FileMakerPro	728	0.07	679	0.07	4.98
Affinity-Apache	699	0.07	684	0.07	0.06
Domino-Go-Webserver	673	0.06	645	0.06	2.16
Apache-1.3.4	672	0.06	1,458	0.14	-54.87
Microsoft-PWS-95	670	0.06	681	0.07	-3.67
QuidProQuo	662	0.06	641	0.06	1.12
Worldgroup	652	0.06	637	0.06	0.22
SWS-1.0	628	0.06	624	0.06	-1.46
Microsoft-PWS	592	0.06	598	0.06	-3.07
Oracle_Web_Listener	413	0.04	356	0.03	13.59
Apache-NeoWebScript	412	0.04	412	0.04	-2.09
IBM-ICS	403	0.04	402	0.04	-1.85
FirstClass	389	0.04	368	0.04	3.50
ApacheSSL	382	0.04	355	0.03	5.36
JavaWebServer	374	0.04	357	0.04	2.57
Xitami	359	0.03	340	0.03	3.38
SAMBAR	335	0.03	324	0.03	1.23
Oracle_Web_listener2.1	310	0.03	326	0.03	-6.90
GTE	300	0.03	252	0.02	16.56
Lotus	298	0.03	314	0.03	-7.08
OmniHTTPd	295	0.03	293	0.03	-1.42
NetUSE	288	0.03	290	0.03	-2.77
Mini-Proxy	288	0.03	319	0.03	-11.60
Apache-SSL-US	282	0.03	291	0.03	-5.12
PowerWeb	269	0.03	272	0.03	-3.17
FrontPage-PWS32	265	0.03	261	0.03	-0.59
ConcentricHost-Ashurbanipal	244	0.02	240	0.02	-0.46
ODN	222	0.02	188	0.02	15.62
Oracle_Web_listener3.0.2.0.0	216	0.02	199	0.02	6.27
HTTPS	215	0.02	221	0.02	-4.75
Oracle_Web_listener3.0	211	0.02	221	0.02	-6.52
Alibaba	210	0.02	230	0.02	-10.60
HPWB	209	0.02	134	0.01	52.71
Apache-EUnet	208	0.02	197	0.02	3.38
HouseIt	204	0.02	193	0.02	3.49
IBM-HTTP-Server	199	0.02	155	0.02	25.70
Oracle_Web_listener2.0	183	0.02	193	0.02	-7.16
Ultraseek	172	0.02	164	0.02	2.69
Oracle_Web_Listener_NT_2.1.0.3.1	172	0.02	160	0.02	5.25
IgServ	172	0.02	166	0.02	1.45
Spinner	168	0.02	171	0.02	-3.81
NetPresenz	167	0.02	172	0.02	-4.94
Lasso	161	0.02	143	0.01	10.23
eShare-Expressions	159	0.02	142	0.01	9.63
Web_Server_4D	158	0.02	154	0.02	0.45
IBM-Secure-Export-ICS	154	0.01	155	0.02	-2.72
Oracle_Web_listener3.0.1.0.0	147	0.01	140	0.01	2.81
Roxen	144	0.01	151	0.01	-6.63
MACOS_Personal_Websharing	143	0.01	135	0.01	3.71
Oracle_Web_listener3.0.1	142	0.01	146	0.01	-4.77
Squid	139	0.01	105	0.01	29.61
CommerceServer400	137	0.01	130	0.01	3.18
BorderWare	135	0.01	141	0.01	-6.26
David-WebBox	133	0.01	136	0.01	-4.25
AppleWSE	133	0.01	130	0.01	0.17
IBM	121	0.01	124	0.01	-4.46
HTTP	121	0.01	123	0.01	-3.68
CONNECTnet[welp3]	118	0.01	110	0.01	5.03
HomeNet	116	0.01	100	0.01	13.58
GoServe	115	0.01	123	0.01	-8.46
Oracle_Web_Listener_NT_2.1.1	113	0.01	119	0.01	-7.03
Statistics	95	0.01	96	0.01	-3.11
Sun_WebServer	94	0.01	84	0.01	9.57
GlobeCom·AB·Web·Server	90	0.01	92	0.01	-4.22
web500gw	78	0.01	0	0.00	N/A
IBM-ICS-AS400	74	0.01	88	0.01	-17.67
Powered	73	0.01	0	0.00	N/A
Netsite-Communications	73	0.01	0	0.00	N/A

Note: Readers are cautioned that the Growth percentages are based on a server's market share penetration rather than the absolute number of servers we detected. Thus, it is possible for the number of servers to increase, while the growth is actually a negative value.