Software that uses OpenSSL

Michael Wojcik Michael.Wojcik at
Thu Aug 6 17:44:17 UTC 2020

> From: openssl-users <openssl-users-bounces at> On Behalf Of Patrick
> Steuer
> Sent: Thursday, 6 August, 2020 10:38
> is there a list of projects that use OpenSSL (for TLS or crypto in
> general) or that can be configured to use OpenSSL as a backend ?

There are probably some partial lists, but there certainly is not a definitive one, since I know of products which use OpenSSL but don't advertise the fact. And while it's *possible* that certain well-resourced organizations have done their best to compile comprehensive lists, but it's unlikely even those are perfectly accurate, and in any case you and I don't have access to them.

OpenSSL is very widely used. Enlyft claims they have 317844 *companies* using OpenSSL, for who knows how many products. Of course, many of those are internal use, or use in widely-used products and projects; but some significant fraction represents ISV products that depend on OpenSSL. A quick search didn't turn up any useful statistics on OpenSSL use in OSS projects. (github's dependency graph, for example, had no information.)

Anything more precise than "a whole lot" will require some real research, I suspect.

More information about the openssl-users mailing list