Clojure vs Haskell

Clojure vs Haskell | Popularity, Salary, Performance, Features, and Applications

If you want to work on server-side applications, cloud applications, web applications, IoT apps, and Data Science projects, you should learn Clojure over Haskell.

Clojure is a robust, dynamic, general-purpose, and functional dialect of the Lisp programming language on the Java platform.

It is a general-purpose programming language that runs on the Java Virtual Machine (JVM).

It interoperates seamlessly with Java code, allowing it to take advantage of the existing Java libraries or systems.

On the other hand, if you are interested in building system tools, compilers, blockchain platforms, web applications, cryptography applications, fintech, etc. you should learn Haskell over Clojure.

Haskell is a general-purpose, purely functional programming language. It was designed for research, teaching, and industrial applications.

Comparing programming languages and choosing which one to learn can be tricky, there are many factors to consider in order to choose the right programming language for the job you want to do.

Popularity, opportunities, types of projects, salaries, resources, learning curve, etc. are some of the factors that many people consider when comparing programming languages and choosing which one to learn.

Here are some of the comparisons and considerations you should make when choosing to learn a new programming language.


Comparing the popularity of programming languages is not an easy task because each programming language is different and they all seek to solve different problems.

Plus, other programming languages have been around for a longer time than others, giving them more time to be tried and tested, so, bear that in mind.

If you want to learn a programming language solely for its popularity among developers, you should learn Haskell over Clojure.

Generally, Haskell is more popular than Clojure. As of September 2023, the TIOBE INDEX ranks Haskell as the 28th most popular programming language while Clojure does not appear in the top 50 popular programming languages.

According to a Stack Overflow survey of 2023, Haskell is the 31st most commonly used programming language, it is used by 2.09% of developers.

On the other hand, Clojure is the 35th most commonly used programming language, it is used by 1.28% of developers according to the same survey.

It is worth noting that Clojure is admired by a lot of developers than Haskell. As of 2023, Clojure is admired by 68.51% of developers while Haskell is admired by 52.21% of developers.

Ultimately, if your choice of which programming language to learn depends on popularity, you should learn Haskell over Clojure.


Another popular criterion that many people use to compare programming languages and as an incentive to learn a new programming language is salary.

Salaries for developers differ from one company to the other and from one country to the other.

Experience is another factor that comes into play as far as salaries are concerned.

The more experience you have with a certain technology or programming language, the more likely you are to get a higher salary.

Generally, Clojure developers get higher salaries than Haskell developers. Clojure is among some of the highly paid programming languages.

According to a Stack Overflow survey of top-paying programming languages, Clojure developers get a median salary of $96,381 per year and Haskell developers get a median salary of $85,672 per year.

So, if the salary is your major incentive for learning a language, you should learn Clojure over Haskell, because you are more likely to get a higher salary as a Clojure developer than as a Haskell developer.

Here are 10 Programming Languages that Pay more than $90,000


Haskell has a slightly easier learning curve than Clojure. This is because Haskell is a purely functional programming language, while Clojure is a hybrid functional/imperative language.

Clojure is more concise and has a simpler syntax based on Lisp, it might seem unusual if you’re coming from languages with more traditional syntax.

However, once you grasp the Lisp-style syntax and its inherent simplicity, it can become quite elegant to work with.

If you are coming from a Lisp background, you will find Clojure easier to work with.

The good news is that there are plenty of helpful resources for both Haskell and Clojure to help you learn the languages.

The Haskell and Clojure communities are very active and helpful, in case you get stuck with something.


Clojure and Haskell have generally comparable performance, but there are some areas where one language may outperform the other.

Haskell’s purely functional nature can lead to certain performance benefits, especially in terms of referential transparency and predictability.

The strong type system can catch many errors at compile time, potentially leading to more optimized code.

Haskell uses lazy evaluation, which can optimize performance by avoiding unnecessary calculations. It can also enable more elegant and efficient algorithms in some cases.

Further, the Haskell compiler GHC (Glasgow Haskell Compiler) incorporate sophisticated optimization techniques that can significantly improve performance.

Haskell is generally considered to be a better choice for numerical computing than Clojure.

On the other hand, Clojure is a good choice for web development, as it has a number of libraries and frameworks that make it easy to build high-performance web applications.

Clojure’s excellent concurrency support can make it a better choice for tasks that require parallel processing.

Clojure’s emphasis on functional programming, immutability, and persistent data structures can sometimes lead to more predictable and consistent performance in multi-threaded or concurrent scenarios.

This is due to the avoidance of shared mutable state, which can help prevent certain types of performance bottlenecks.

Clojure runs on the Java Virtual Machine (JVM), which means it can take advantage of the JVM’s mature and highly optimized runtime.

The JVM offers efficient garbage collection, just-in-time compilation, and excellent support for multithreading, which can lead to good performance in many scenarios.



Clojure combines the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming.

Clojure provides tools for managing concurrent and parallel execution, making it easier to write programs that take advantage of modern multicore processors.

Clojure runs on the JVM, which means it can leverage Java libraries and frameworks seamlessly. This makes it easy to reuse existing Java code and integrate with the Java ecosystem.

Clojure is used by many companies such as Walmart, Nubank, Puppet, Chartbeat, MailOnline, BeanStalk, Atlassion, Base2, Kidblog, Greenius, Lendup, Zimpler, Gojek, Pisano, Freshcode, French Digital Administration, and many others.


Haskell is a purely functional programming language; this means that functions generally have no side effects.

Haskell’s notable features include statically typed, type inference, concurrency, lazy evaluation, pattern matching, list comprehension, etc.

These and many other features make Haskell a popular choice for industrial applications.

Haskell is used by Facebook to implement its anti-spam programs. The Cardano blockchain platform is implemented in Haskell.

The Target stores’ supply chain optimization software is also written in Haskell.

Other companies that use Haskell include GitHub, New York Times, Bluespec, Standard Chartered, Microsoft, Google, Hasura, Bitnomial, Intel, Siemens, Serokell, Foxhound Systems, Stack Builders, AT&T, Scarf, Fission, Mercury, and many others.


Clojure is better than Haskell when it comes to leveraging existing popular libraries. Clojure runs on the JVM and has excellent interoperability with Java.

This makes it a strong choice for projects that need to leverage existing Java libraries or interact with Java-based systems. You can call Java code directly from Clojure and vice versa.

Haskell is better than Clojure for projects where type safety, lazy evaluation, immutability, and correctness are critical.

Haskell is known for its strong commitment to pure functional programming, which can lead to code that is more robust, predictable, and maintainable.

It enforces immutability and encourages referential transparency.

Haskell’s lazy evaluation can lead to more efficient and elegant solutions in some cases. It allows you to write code that defers calculations until their results are actually needed.


Once you have compared the languages and evaluated all the factors, you can choose which programming language to learn depending on the factors that are on your side and what you want to build.

If you are interested in a high-paying, Lisp dialect that you can use to work on server-side applications, cloud applications, web applications, IoT apps, and Data Science projects, you should learn Clojure over Haskell.

If you want a popular language that you can use for building system tools, compilers, blockchain platforms, web applications, cryptography applications, fintech, etc. you should learn Haskell over Clojure.