Clojure
Clojure

667
492
888
Erlang
Erlang

399
319
250
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Clojure vs Erlang: What are the differences?

What is Clojure? A dynamic programming language that targets the Java Virtual Machine. Clojure is designed to be a general-purpose language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming. Clojure is a compiled language - it compiles directly to JVM bytecode, yet remains completely dynamic. Clojure is a dialect of Lisp, and shares with Lisp the code-as-data philosophy and a powerful macro system.

What is Erlang? A programming language used to build massively scalable soft real-time systems with requirements on high availability. Some of Erlang's uses are in telecoms, banking, e-commerce, computer telephony and instant messaging. Erlang's runtime system has built-in support for concurrency, distribution and fault tolerance. OTP is set of Erlang libraries and design principles providing middle-ware to develop these systems.

Clojure and Erlang belong to "Languages" category of the tech stack.

"It is a lisp" is the top reason why over 96 developers like Clojure, while over 49 developers mention "Real time, distributed applications" as the leading cause for choosing Erlang.

Clojure and Erlang are both open source tools. Clojure with 7.85K GitHub stars and 1.25K forks on GitHub appears to be more popular than Erlang with 7.74K GitHub stars and 2.1K GitHub forks.

CircleCI, Groupon, and Soundcloud are some of the popular companies that use Clojure, whereas Erlang is used by AdRoll, Grooveshark, and Heroku. Clojure has a broader approval, being mentioned in 95 company stacks & 80 developers stacks; compared to Erlang, which is listed in 70 company stacks and 47 developer stacks.

What is Clojure?

Clojure is designed to be a general-purpose language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming. Clojure is a compiled language - it compiles directly to JVM bytecode, yet remains completely dynamic. Clojure is a dialect of Lisp, and shares with Lisp the code-as-data philosophy and a powerful macro system.

What is Erlang?

Some of Erlang's uses are in telecoms, banking, e-commerce, computer telephony and instant messaging. Erlang's runtime system has built-in support for concurrency, distribution and fault tolerance. OTP is set of Erlang libraries and design principles providing middle-ware to develop these systems.

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    What are some alternatives to Clojure and Erlang?
    Scala
    Scala is an acronym for “Scalable Language”. This means that Scala grows with you. You can play with it by typing one-line expressions and observing the results. But you can also rely on it for large mission critical systems, as many companies, including Twitter, LinkedIn, or Intel do. To some, Scala feels like a scripting language. Its syntax is concise and low ceremony; its types get out of the way because the compiler can infer them.
    Haskell
    Common Lisp
    Lisp was originally created as a practical mathematical notation for computer programs, influenced by the notation of Alonzo Church's lambda calculus. It quickly became the favored programming language for artificial intelligence (AI) research. As one of the earliest programming languages, Lisp pioneered many ideas in computer science, including tree data structures, automatic storage management, dynamic typing, conditionals, higher-order functions, recursion, and the self-hosting compiler. [source: wikipedia]
    Elixir
    Elixir leverages the Erlang VM, known for running low-latency, distributed and fault-tolerant systems, while also being successfully used in web development and the embedded software domain.
    Julia
    Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments. It provides a sophisticated compiler, distributed parallel execution, numerical accuracy, and an extensive mathematical function library.
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    How developers use Clojure and Erlang
    Avatar of Brandon Adams
    Brandon Adams uses ClojureClojure

    Cloure is a high level language that provides access to both the JVM (for server-side development) and javascript (for client-side development) with largely the same language. This is important to limit context switching and enable code-reuse during fast product cycles. Clojure is ideal for rapid prototyping and has a strong focus on stability, correctness, and concurrency. Tools like Schema and Spec enable well-structured development and high code confidence.

    Avatar of Brian Fults
    Brian Fults uses ClojureClojure

    To complement Java. The REPL lets me interactively exercise Java code. I can write performant and safe libraries in Java, and then use them in Clojure. I also find the data-centric aspect of Clojure (excellent build-in structures, literal syntax for easily creating those structures, functions that act well on abstractions of those structures) good for data processing.

    This fits a sweet spot between Ruby and Java.

    Avatar of BandSquare
    BandSquare uses ClojureClojure

    We use Clojure mostly for its "Minority Report"-like interactive development in situations that require 'semi-automatic programming' (data inspection, admin tasks, API exploration, scrapers, etc.). We have also used Clojure successfully to build some components of our stack very quickly and reliably, in the backend and the frontend.

    Avatar of papaver
    papaver uses ClojureClojure

    just started learning clojure, maybe around two weeks or so. i'm addicted. this is what i want to be working with and learning for the foreseeable future. the elegance of the language is refreshing. the community is really amazing. i've finally found a language that fits my passion for programming.

    Avatar of CloudRepo
    CloudRepo uses ClojureClojure

    Clojure simplifies and reduces the coding efforts involved in creating CloudRepo. The fact that it runs in the JVM gives us access to all the libraries that we could ever need. Our code base is much smaller and easier to reason about than it would have been had we gone with pure Java.

    Avatar of Analytical Informatics
    Analytical Informatics uses ErlangErlang

    The central business logic and ETL engine is written in Erlang.

    Avatar of Mathias Vonende
    Mathias Vonende uses ErlangErlang

    Very nice programming language, used for backend integration.

    Avatar of Ryan Jennings
    Ryan Jennings uses ErlangErlang

    foundation VM for phoenix framework

    Avatar of Software Joint
    Software Joint uses ErlangErlang

    Cowboy web server serves content

    Avatar of KongHack Inc.
    KongHack Inc. uses ErlangErlang

    Custom plugins for ejabberd

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