zitadel VS FreeIPA

Im one of the authors of ZITADEL the open source identity and access management solution.

An other Keycloak alternative would be our (I am one of the founders) project ZITADEL.

You could take a look at https://zitadel.ch/ Or curity https://curity.io/product/

I'm biased since I work for ZITADEL (https://github.com/caos/zitadel). Passwordless with FIDO2 has been baked in since the beginning. I reckon that the major Open Source alternatives provide support as well. FIDO2 should work on all major OS and browsers.

And a bigger project i know is zitadel (https://github.com/caos/zitadel)

https://zitadel.ch/ https://github.com/caos/zitadel/

Full disclosure: My company is building ZITADEL, an open source alternative for Auth0 or Keycloak (both still very good, with some drawbacks). https://github.com/caos/zitadel/

We are building a cloud-native IAM over here https://github.com/caos/zitadel

It is written in Go and built around event sourcing for a great audit trail. We already support OIDC, Passwordless, RBAC and working on more features each day.

For those who want to run it on-prem we have a kubernetes operator ready in the next few weeks who also manages the database (cockroach).

We run our own service here https://zitadel.ch with a free tier as well

Feel free to engage with us on GitHub discussions.

I'm not sure if it makes sense to build your own oauth/oidc server. It's fun to learn all these techniques but you have to maintain much more code. You also have to implement security mechanisms from dev and ops perspectives. There are existing implementations. If you want to check out an existing open source implementation in go you could take a look at the implementaion of my company called zitadel. I would love to answer question if there are any.

I also want to try FreeIPA but as it's built on top of 389ds I'm afraid that it's gonna be as big of a memory hog (will try it later anyways) and has many things I don't and won't need, which I'm afraid would add complexity to setup.

FreeIPA server and replicas

A good place to start might be FreeIPA.

FreeIPA1 is not written in PHP. I believe you are confusing it with another project, maybe FreePBX which is written in PHP?

I had Fedora 34 installed to an SD card for a FreeIPA node which worked well. It was most likely an earlier release (32 or 33) running on a Pi 3B which would occasionally run out of memory, so the whole thing got transplanted to a Pi 4 with 4GB. I'm pretty sure I used the disk image to install since I like to start from a minimal image and only install what I need.

Take a look at FreeIPA

https://www.freeipa.org/page/Main_Page and https://github.com/freeipa/freeipa/tree/master/doc/workshop