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Haskell vs OCaml: catalog facts
Haskell	OCaml
Free Free and open source.	Free Free and open source.
Windows, Command line	Windows, macOS, Linux, Command line
Strong static type system catches errors early Pure functions and immutability make code easier to reason about	Strong type system that catches errors early Native compiler plus interactive toplevel
Steep learning curve for programmers used to imperative languages Lazy evaluation can make performance harder to predict	Smaller library ecosystem than mainstream languages Functional style takes time to learn
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: LGPL-2.1
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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