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Super useful CLI utility to count lines of code of basically any language 👌 It can also output results in other formats like JSON, CSV or YAML.

Nice and lightweight wrapper around the Calendly API, for Ruby apps.

The best gem for authentication. Very easy to add and extend if needed. For stronger security, you can easily integrate it with https://github.com/phatworx/devise_security_extension

The best thing about this gem is that it has practically become a standard and is battle-tested in production by many many apps.

Works like magic, and easy to set-up. I've used this to transcribe long podcasts and make them searchable.

Very useful gem, along with many other gems created by ankane. Worth to check them all.