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Scala vs Haskell: catalog facts
Scala	Haskell
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, Command line
Combines functional and object-oriented styles Runs on the JVM with access to Java libraries	Strong static type system catches errors early Pure functions and immutability make code easier to reason about
Migrating from Scala 2 to Scala 3 can take work Steeper learning curve than many JVM languages	Steep learning curve for programmers used to imperative languages Lazy evaluation can make performance harder to predict
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: BSD-3-Clause
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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