Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

Ory Community

<https://github.com/ory/kratos#who-is-using-it> you can see some of the adopters here

I can also tell you that we have/had contributions by wikia and wish:
<https://github.com/Wikia/kratos>
<https://github.com/ContextLogic/kratos>
but there are not public info on how they use it yet

<https://github.com/ory/kratos/network>
<https://github.com/ory/kratos/network/members>

Yes there are many companies in production that are not on the GitHub adopters list.
Happy to answer any questions you have in that regard in the dms <@U02G3C3LJ20>

thx for providing more info. I saw the page : <https://www.ory.sh/kratos/docs/further-reading/comparison/>, is there perhaps a draft in a PR already?

also found New Relic(Pixie) is using Ory. <https://blog.px.dev/open-source-auth/>

As for the comparison page, I have that on my plate :knife_fork_plate:
But it will probably a few months until this is ready.