Top SSL Certificate Brands of 2017

An ongoing survey by W3Techs has thrown up some interesting numbers on the state of the global SSL Certificate market. Most notably 23.7% of websites have yet to implement SSL certificates.

W3Techs investigated technologies of websites, not of individual web pages. If a technology was found on any of the pages, it is considered to be used by the website.

W3Techs included only the top 10 million websites (top 1 million before June 2013) in the statistics in order to limit the impact of domain spammers. Website popularity rankings were provided by Alexa (an company) and a 3-month average ranking was used.

W3Techs did not consider subdomains to be separate websites. For instance, and are considered to belong to the same site as That means for example, that all the subdomains of, and similar sites are counted only as one website.

W3Techs did not include redirected domains. For example, redirects to, and is therefore not counted.

Not surprisingly to us at iWebz, the results show Comodo certificates are preferred by 39.4% of all websites that use SSL certificates, and the free SSL certificate authority Let's Encrypt is yet to get major traction with websites.

w3techs ssl certificate market chare

The stats are updated daily and are available on


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Let’s Encrypt certificate or a commercial SSL – the final verdict

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Let's Encrypt background info

Introduced in 2016, Let's Encrypt represents a free open certificate authority (CA), which provides website owners with digital certificates for enabling HTTPS (SSL/TLS).

It was launched by the Internet Security Research Group (ISRG), a public-benefit organization sponsored by the Mozilla Foundation, the Electronic Frontier Foundation (EFF) and Cisco Systems, with the aim of making HTTPS encryption both affordable and user-friendly.

Their main goal is to create a more secure, privacy-driven web.

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Let’s Encrypt Free SSL Certificates – What You Need To Know

About Let’s Encrypt

let's encrypt logoLet’s Encrypt is a new non-profit Certificate Authority (CA) sponsored and founded by industry advocates; such as, the Electronic Frontier Foundation (EFF), Mozilla, and the Internet Security Research Group (ISRG). Let’s Encrypt offers free SSL certificates.

The key principles behind Let’s Encrypt are:

  • Free: Anyone who owns a domain name can use Let’s Encrypt to obtain a trusted certificate at zero cost.
  • Automatic: Software running on a web server can interact with Let’s Encrypt to painlessly obtain a certificate, securely configure it for use, and automatically take care of renewal.
  • Secure: Let’s Encrypt will serve as a platform for advancing TLS security best practices, both on the CA side and by helping site operators properly secure their servers.
  • Transparent: All certificates issued or revoked will be publicly recorded and available for anyone to inspect.
  • Open: The automatic issuance and renewal protocol will be published as an open standard that others can adopt.
  • Cooperative: Let’s Encrypt is a joint effort to benefit the community, beyond the control of any one organization.

Let’s Encrypt Will Have Major Limitations

Unfortunately, Let’s Encrypt will have some very notable limitations due to their limited funding and infrastructure. Because they will only be offering free certificates, they will only be able to provide automated, basic encryption only/Domain Validated (DV) SSL certificates with no other frills that typically come with SSL certificates.

Other observations that undermine Let’s Encrypt

Since the SSL certificates are free of cost and open to anyone, malvertisers and other bad guys can get them for all their websites. This lets them encrypt data transferred to their servers making detection by good guys more difficult. This undermines the trust factor of Let's Encrypt and could lead to their certificates being derecognised in future.

Unlike brands that have been around for longer such as COMODO, Thawte, GeoTrust, Symantec, etc., Let's Encrypt intermediate CA certificates (required for recognising website certificates) are not available on older versions of operating systems such as Windows XP. Users on those systems will not have a secure connection and so will not transact.

Years of Experience Taught us That Users Need More than a Free Certificate

We have worked with many customers and if our experience has taught us anything, it’s that SSL can be confusing, and many people need help. Knowing what type of certificate you need and how you will get it successfully working on your network are the most common and most serious questions our customers have.

Let’s Encrypt’s one-size-fits-all approach isn’t perfect. A personal blog has different needs than a corporate homepage. We believe there is a perfect solution for everyone: personal attention and attentive support behind globally recognized brands. A free service cannot afford to give that to their non-paying customer.

Our Assessment of Let’s Encrypt

We do not think Let’s Encrypt should be a viable option for commercial use of any kind, you should continue to buy from established Certificate Authorities (CAs) such as Symantec, Comodo, GeoTrust, RapidSSL and Thawte. Especially since the pricing for basic encryption/Domain Validated (DV) certificates are available for extremely low and affordable rates and still carry a strong brand name recognized by most web users.