Good Elixir libraries/code bases to read?

The question is: what are you interested in?

There are some codebases (for example ecto, phoenix) where it will be extremely hard to understand what is going on as a beginner (or even as someone more experienced ) as they are heavily using metaprogramming.

If you are interested in web, you can take a look at one of my projects that we never managed to finish: SSL MOON / SSL MOON · GitLab . It was developed by beginners, so the concepts there should be pretty easy to understand as long as you read how core technologies like ecto, phoneix, liveview work.

If you’re looking for large projects maintained by large numbers of people all open-source, the Massachusetts Bay Transportation Authority (the city of Boston’s transit authority) is all open-source:

For the folks who liked this, serendipitously they just opened a role today
https://jobs.lever.co/mbta/c587ba09-edcf-42e7-b6e7-9cd4b4101dd3

I think the Ecto codebase is a pretty good reference as source code goes.

https://github.com/elixir-ecto/ecto

if you’re looking for real use cases of application you can start with some opensource ones:
Bytepack was a product by Dashbit(Jose Valim’s company) to help people sell payed versions of libraries(like oban_pro/oban_web for example).
Changelog.com is a network of software related podcasts, their website/podcast feed is written in elixir and is opensource.
LiveBeats is a demo app for online radio written with phoenix live view.
Plausible is an analytics tool, alternative to google analytics.

social networks with activity pub

Akkoma is a microblogging federated social network using activity pub, like mastodon. written in elixir.
BonfireNetwork is also a federated social network using activity pub, iirc it uses live view. it’s not restricted to microblogging there are some other usages.
Mobilizon is a federated events social network, using activity pub. kinda like facebook events or meetup, but open source and federated.