June 2019 Web Server Survey

In the June 2019 survey we received responses from 1,333,421,275 sites across 236,991,999 unique domain names and 8,840,331 web-facing computers. This reflects gains of 6.76 million sites, 1.98 million domains, and 113,000 computers.

nginx has further extended its lead in the hostnames metric, with 52.2 million additional sites pushing its total up to 440 million. Since overtaking Apache in April, nginx has already built up a 4.89 percentage point lead over Apache's market share and is not far off accounting for more than one third of all sites.

Apache retains the lead in all other metrics, but for how long? The proportion of unique domains that are served by Apache has fallen to 30.1%, while nginx snapped up the majority of this month's net domain growth, bringing its share to within 3.4 percentage points of Apache's. There has been a clear trend of Apache's domain market share decreasing, while nginx's increases and looks likely to overtake Apache within a year. A similar trend is evident in web-facing computers and among the top million sites, so it may not be long before nginx steals more of the limelight.

Reports of a remote code execution vulnerability in most recent versions of nginx were downplayed by its developers, who claimed that neither of the two overflow vulnerabilities appeared to be generally exploitable. Both bugs affected the njs scripting language implementation that allows nginx's functionality to be extended; one bug was fixed in njs 0.3.2, which was released on 21 May along with nginx 1.17.0, while the other bug is expected to be fixed in the future release of njs 0.3.3.

Several other product updates were also released during May, including NGINX Unit 1.9.0, lighttpd 1.4.54, LiteSpeed Web Server 5.3.8 (Stable), OpenLiteSpeed 1.5.1, and cPanel & WHM 80. The latest version of cPanel & WHM adds the ability to run Node.js applications, manage API tokens to allow resellers and third-party developers to run API functions, and ensure visitors are redirected to the secure HTTPS versions of sites.

Envoy – the open source edge and service proxy for cloud-native applications, which leapt to prominence in last month's survey – remains in tenth place with around 5 million sites, which are spread across 2.7 million unique domain names.

Cloudflare's web server has moved up into fifth place after gaining more than 5 million websites, giving it a total of 35.1 million sites across 12.9 million domains. The Cloudflare server is used by the edge nodes of Cloudflare's content delivery network, which now serves 2.6% of all sites in this month's survey.

Microsoft saw losses in every metric this month, apart from web-facing computers, where it made a gain of 13,600; however, this was not enough to stop its market share falling slightly, while Apache gained 17,300 computers and nginx gained 64,000.

Total number of websites

Web server market share

DeveloperMay 2019PercentJune 2019PercentChange
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Most Reliable Hosting Company Sites in May 2019

Rank Performance Graph OS Outage
DNS Connect First
1 Webair Linux 0:00:00 0.000 0.341 0.078 0.156 0.157
2 Swishmail FreeBSD 0:00:00 0.000 0.257 0.090 0.181 0.183
3 Pair Networks Linux 0:00:00 0.000 0.351 0.092 0.185 0.185
4 One.com Linux 0:00:00 0.000 0.416 0.094 0.189 0.189
5 www.choopa.com Linux 0:00:00 0.005 0.287 0.006 0.023 0.024
6 Rackspace Linux 0:00:00 0.005 0.674 0.007 0.017 0.018
7 Hyve Managed Hosting Linux 0:00:00 0.005 0.182 0.077 0.153 0.154
8 EveryCity SmartOS 0:00:00 0.005 0.251 0.077 0.372 0.372
9 Bigstep Linux 0:00:00 0.005 0.261 0.079 0.161 0.161
10 ServerStack Linux 0:00:00 0.005 0.253 0.087 0.174 0.174

See full table

Webair had the most reliable hosting company site in May 2019, responding to all of Netcraft's requests, and with an average connection time of 78ms. Webair provides a range of services including managed hosting solutions and high performance cloud environments.

The next three most reliable hosting company sites also responded to all of Netcraft's requests in May 2019 and were separated by average connection time. Swishmail, Pair Networks and One.com were placed second, third and fourth with average connection times of 90ms, 92ms and 94ms. Swishmail is a New York based hosting and email solutions provider.

The remaining six sites that make up the top 10 each failed to respond to one request. Choopa.com appears in fifth with the fastest average connection time among the top 10 of 6ms. Choopa.com has appeared in the top 10 every month so far in 2019, and has had the most reliable hosting company site twice in that period.

Linux continues to be the predominantly used operating system, powering eight of the top ten sites. FreeBSD makes an appearance in second place with Swishmail and SmartOS appears in eighth with EveryCity.

Netcraft measures and makes available the response times of around twenty leading hosting providers' sites. The performance measurements are made at fifteen minute intervals from separate points around the internet, and averages are calculated over the immediately preceding 24 hour period.

From a customer's point of view, the percentage of failed requests is more pertinent than outages on hosting companies' own sites, as this gives a pointer to reliability of routing, and this is why we choose to rank our table by fewest failed requests, rather than shortest periods of outage. In the event the number of failed requests are equal then sites are ranked by average connection times.

Information on the measurement process and current measurements is available.