Clojure & ClojureScript

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Joshua Ballanco

“The presentation is top notch, and the show notes are probably the best I've seen since RailsCasts”

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Lucas Dohmen, Jan Stępień

“Lambda Island is a great resource for both our experienced Clojure programmers as well as those of us that just want to know how Clojure works (differently). [...] Arne knows really well how to take a difficult subject — such as Clojure’s polymorphism or transducers — dissect it, and clearly explain it, one morsel at a time. [...]”

Great screencasts

47. Interceptors, part 1, concepts45. À la Carte Polymorphism, part 1

Check out some freebies

A lot of the Lambda Island episodes are available for free, so go ahead and check them out. And if you prefer written documentation over video then we have you covered as well, with transcripts and examples for every episode.

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Ready to supercharge your skills? Willing to take it from novice to pro? Sign up for full access and you will have some of the most high quality materials about the language and ecosystem at your fingertips.

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49. Passwordless Authentication With ring-oauth248. List Comprehension with clojure.core/for

Read in-depth articles

Check out (-> Stranded Between Parens), the Lambda Island blog.

How we give back

Lambda Island creates and maintains several popular Clojure libraries and tools.


Full featured next gen Clojure test runner.


Royally reified regular expressions.


A ClojureScript logging library based on goog.log.


Convert ANSI escape codes to Hiccup.

We also maintain community infrastructure, like the ClojureVerse forum and the clojurians-log Slack archive.



Custom Pricing

Do you fall under following categories? We can give you a discount. No questions asked.

  • Student

  • Unemployed

  • Clojure Bridge attendee

  • Just can’t afford it

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Clojure geek, or just Clojure curious? We’ve got you covered. Learn step by step all the pieces you need to build your own app—from the frontend to the database—and learn from the pros how to be productive with Clojure’s unique interactive development style.

  • 10–15 minute in depth videos

  • Full, detailed transcripts

  • Accompanying repos



Custom Pricing

Looking to lift your whole team to the next level? Need to onboard developers quickly? Save hours of development time by getting up to speed quickly, and avoid costly but common mistakes.

  • Manage team acess through the teams dashboard

  • Make people productive quickly across the stack

  • Fastest path to learning Reagent and re-frame

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A Part of Gaiwan

Lambda Island is proudly presented to you by Gaiwan GmbH.

We are a technology provider with a proven track record of enabling our clients and their business.

Our (not so) secret weapon is Clojure.

Oh, and we also organize the Heart of Clojure conference.